This day in military history..

April 20
1657 Battle of Santa Cruz de Tenerife
1689 Siege of Derry begins
1770 Battle of Aspindza
1775 Siege of Boston begins
1809 Battle of Abensberg
1861 USN burns and abandonds the Norfolk Navy Yard
1864 Battle of Plymouth ends
1940 Trawler HMS Rutlandshire bombed/sunk off Namsos. Norwegian Patrol Boat Smart sunk by KM Gunnery Training ship Bremse at Uskedel. Torpedo Boat Stegg sunk by KM Schiff 221, Schiff 18 damaged by Minelayer Tyr and beached, and Minelayer Tyr is captured at Hardangerfjord
1941 R.N. Harbor Defence Motor Launches HDML 1003 and 1037 lost as deck cargo when Empire Endurance is sunk by U-73 south-west of Rockall. Trawler HMS Topaze rammed/sunk by Battleship HMS Rodney off the Clyde. Greek Destroyer Psara bombed/sunk in Saronic Gulf. Destroyer Vasilfs Georgios scuttled at Salomis Navy Base, raised, repaired and entered KM service as Hermes.
1942 Destroyer HMS Cotswold damaged by a mine and beached, refloated, repaired and returned to service
1944 Destroyer USS Lansdale torpedoed/sunk by JU-88s off Algeria. KM Ammo ship Voorbode blows up off Bergen. Sub Chaser UJ 203 sunk by Allied aircraft at Monfalcone. Sub RO-45 sunk by USS Seahorse off the Marianas.
1961 Bay of Pigs invasion ends
1978 Soviets shoot down KAL flight 902
 
April 21
43 B.C. Battle of Mutina
1526 1st Battle of Panipat
1809 Battle of Eckmuhl begins
1836 Battle of San Jacinto
1899 Norway adopts the Krag-Jorgensen
1918 The Red Baron shot down
1941 Greek Destroyer Thyella bombed/sunk off Piraeus
1942 Trawler HMS Jade bombed/sunk in The Grand Harbor, Malta
1943 Sub HMS Splendid damaged by KM Destroyer Hermes and scuttled off Corsica. sub USS Grenadier bombed/damaged off Penang, scuttled next day.
1944 KM Minelayer Roland sunk by mine in the Gulf of Finland. KM Minesweeper M-553 sunk by mines off East Prussia.
1945 KM Minelayer Ostmark bombed/sunk west of Anholt, Denmark. U-636 sunk by Frigates HMS Drury and Bentinch west of Scotland
 
April 22
1622 Siege of Ormuz ends
1778 USS Ranger raids Whitehaven, England
1809 Battle of Eckmuhl ends
1863 9 Union supply ships towing 9 barges run the batteries @ Vicksburg. 1 ship & 6 barges are sunk, but enough supplys get through to keep Grant going.
1898 US begins blockading Cuba. USS Nashville captures a Spanish merchant ship.
1915 2nd Battle of Ypres begins
1930 London Naval Treaty signed
1941 Greek Minelayer Aliakmon, Destroyer Hydra and Torpedo Boat Kios bombed/sunk. R.N. A Lighter A 16 bombed/damaged off Megare, scuttled on June 2nd.
1943 Trawler HMS Herring sunk in a collision with French SS Cassard north east of Blyth.
1944 1st combat use of helicopters by the 1st Air Commando Group in Burma. U-311 sunk by Frigates HMCS Matane and Swansea.
1945 Landing craft, Support LCS-15 and Minesweeper USS Swallow sunk by Kamikazes off Okinawa. US Sub Chaser SC-1019 runs aground and sinks in the Yucatan Channel north of Cuba. U-518 sunk by Destroyer Escorts USS Carter and Neal A. Scott north of the Azores
1951 Battle of Kapyong begins
2005 last F-117 retired
 
April 23
1014 Battle of Clontarf
1521 Battle of Villalar
1655 Siege of Santo Domingo begins
1918 Destroyer USS Stewart sinks U Boat off France. Zeebrugge Raid.
1940 KM Sub Chaser UJ-B sunk by HMS Tetrarch in the Skagerrak. Aux. Minesweeper M-1302 sunk by mine in the Kattegat.
1941 Greek Battleships Kilkis and former Battleship Lemnos, plus 4 Minelayers and 2 Torpedo Boats bombed/sunk at Salamis. R.N. A Lighter A 1 bombed/scuttled at Megara. Italian Armed Merchant Cruiser Egeo sunk by 4 R.N. Destroyers.
1943 U-189 sunk by RAF B-24 east of Cape Farewell, Greenland. U-191 sunk by destroyer HMS Hesperus south east of Cape Farewell. US Patrol Boat YP-395 ran aground and sank off New Caledonia. IJN Patrol Boat PB-39 sunk by USS Seawolf east of Formosa
1944 Destroyer Amigiri sunk by mine in Makassar Strait. E Boat S-54 damaged by mine, scrapped.
1945 US Patrol Ship PE-56 sunk by U-853 off Cape Elizabeth, Maine. U-183 sunk by sub USS Besugo in the Java Sea. Sub chaser UJ-2222 sunk by USN PT boats off Genoa. Sub chaser VAS 202 scuttled at La Spezia.
1949 Red China's People's Liberation Army-Navy (Navy) Est.
 
April 28
1503 Battle of Cerignola
1760 Battle of Sainte-Foy
1789 Mutiny on the Bounty
1862 Battle of New Orleans: The Garrison of Ft. Jackson mutinys and forces the surrender of it and Ft. St. Philip
1940 Trawler HMS Cape Siretoko bombed/sunk west coast of Norway, raised, repaired and put in KM service as V-6113
1941 U-65 sunk by Destroyer HMS Douglas. Trawler HMS Caroline sunk with all hands by a mine off Milford Haven. R.N. LCT-5 bombed, beached, abandoned at Monemvassia, Greece. R.N. Lighter A-15 bombed/sunk between Suda Bay and Monemvassia. Greek Minelayer Aixos sunk at Syros.
1942 Tug HMS West Dean bombed/sunk at Malta
1943 KM Patrol Ship UJ-1402 sunk off Lannion, France. R.N. MTB-639 sunk by Italian Torpedo Boat Sagittaro off Pantellaria. Italian Torpedo Boat Climene sunk by sub HMS Unshaken west of Sicily.
1944 USN LST-507 and 531 sunk by E Boats off Slapton Sands
1945 Minesweeper USS Skylark sunk by mine off Okinawa. R.N. Minesweeper BYMS 2053 sunk by mine off Porto Corsini, Italy. U-56 bombed/sunk at Kiel. Sub Chaser CH-17 sunk by sub USS Springer, and Landing Ship T-146 sunk by sub USS Trepang, both off Fukui Shima. Cable Layer Hashima sunk by sub USS Sennet off Mikizaki.
1965 US invades the Dominican Republic
 
April 30
313 Battle of Tzirallum
1557 Battle of Mataquito
1636 Siege of Schenkenschams ends, began July 30, 1635
1798 Dept. of the Navy Est.
1863 Battle of Camerone
1937 Spanish Nationalist Navy Battleship Espana sunk by mine off Cape Penas
1940 Trawler HMS Aston Villa and St. Goran bombed off Norway, later scuttled. Trawler HMS Jardine bombed/damaged the day before is scuttled off Trondheim, raised, repaired, put in KM service as V-6117. Sloop HMS Bittern bombed at Namsos and scuttled. Minesweeper Dunoon sunk by mine off Great Yarmouth. Trawler HMS Warwickshire bombed/sunk off Trondheim, raised, repaired, put in KM service as Alame. French Destroyer Maille Breze sunk by discharge and explosion of 2 of her own torpedos near her Bridge. KM Torpedo Boat Leopard sunk in collision with Minelayer Preussen in the Skagerrak
1941 Tug HMS Peuplier bombed/sunk off Plymouth. Trawler HMS Trusty Star bombed/sunk at Malta, raised, repaired, put back into service. Minesweeper HMS Fermoy bombed/damaged beyond repair, bombed/sunk on May 4. Patrol Ship HMIS Parvati sunk by mine in the Red Sea.
1942 Cruiser HMS Edinburgh damaged by U-456, sunk by destroyer Z-24 on May 2.
1943 U-227 sunk by an RAAF Hampden off Iceland. KM E Boat RA-10 bombed/sunk off Tunisia. destroyer Hermes bombed/damaged by Allied aircraft off cape Bon, scuttled at La Golette, Tunisia on 7 May. Italian Destroyers Lampo and Leone Pancado bombed/sunk off Tunisia. MTB MAS 552 sunk in the Strait of Sicily. MTB MS 25 bombed/sunk west of Sicily.
1944 Aux. Sub Chaser CHa-38 sunk by US aircraft at Truk.
1945 U-879 sunk by 4 USN ships east of Cape Hatteras. U-1107 sunk by USN PBY west of Brest. U-3525 bombed/damaged in the Baltic, scuttled on 3 May. Torpedo Boat TA-43 sunk by Partisan artillery, or scuttled, at Trieste. Frigate HMS Goodall scuttled after being damaged the day before by U-286
1975 Saigon falls, Vietnam War ends
 
May 1
1455 Battle of Arkinholm
1778 Battle of Crooked Billet
1794 Battle of Boulou
1898 Battle of Manila Bay
1940 KM Troopship Buenos Aires sunk by HMS Narwhal in the Skagerrak. KM Minelayer Uller bombed by Norwegian He-115s and scuttled. Norwegian Troopship Dronning Maud bombed/sunk off Foldvik. Trawler HMS St. Goran bombed/sunk off Namsos. Norwegian Guardship Veslefrikk scuttled in Lonnefjord
1941 Trawler HMS Jean Frederic bombed/sunk off Start Point. Balloon Vessel HMS Saturnus declared total loss from unspecified damages. Seaplane Tender Mizuho sunk by USS Drum off Japan.
1942 Destroyer HMS Punjabi rammed/sunk by Battleship HMS King George V. U-573 damaged by RAF Hudson west of Spain, interned in, and purchased by, Spain
1943 Soviet Sub ShCh-323 sunk by mine off Petershof
1944 U-277 sunk by Swordfish from HMS Fencer southwest of Bear Island. USN Patrol Craft YP-95 ran aground and sank, Adak, Alaska. R.N. Harbor Defence Motor Launch 1380 sank in a storm in the Aegean. Sub chaser CH-10 wrecked off the north tip of Palau.
1945 Australians land at Tarakan. U-3006 scuttled at Wilhelmshafen. U-3009 scuttled near Wesermunde. Frigate CD-50 damaged by sub USS Sennet, towed to Osaka, repairs not completed by end of War and scrapped 1948.
1960 Gary Power's U-2 shot down.
1965 naval Battle of Dong-Yin
1995 Operation Flash begins
 
May 2
1866 Battle of Callao
1885 Battle of Cut Knife, Canada
1940 Norwegian Minesweepers Djerv & Dristig scuttled to prevent capture. French Destroyer Bison and Destroyer HMS Afridi bombed/sunk off Norway
1941 Anglo-Iraqi War begins. Trawler HMS Alberic sunk in a collision with Norwegian Destroyer St. Albans in the Pentland Firth. Destroyer HMS Jersey sunk by mine at Malta. Armed Yacht HMS Nyula sunk in a collision off the Tyne. KM Trawler Vp-808 bombed/sunk north west of Borkum
1942 Naval Yacht USS Cythera sunk by U-402 off N. Carolina. River Gunboat USS Mindanao bombed/scuttled off Corregidor. Cruiser HMS Edinburgh sunk by Z-25, and Z-27 sunk by HMS Edinburgh in the Barents Sea. Polish sub Justrzab damaged by Norwegian Destroyer St. Albans and Minesweeper HMS Seagull and scuttled. U-74 sunk by Destroyers HMS Wishart and Wrestler south east of Cartagena.
1943 USCG Patrol Boat 58012 sunk by engine room explosion off Mass. R.N. MTB 311 sunk by mine off Algeria. U-465 sunk by RAAF Sunderland in Bay of Biscay.
1944 Destroyer USS Parrott rammed by SS John Morton while backing out of a slip at Norfolk, Va., hull bent beyond repair and scrapped post War. U-674 sunk by Swordfish northwest of Narvik and U-959 south east of Jan Mayen.
1945 Russians announce fall of Berlin. Cruiser Adm. Hipper & 17 U-Boats scuttled. Trawler HMS Ebor Wyke sunk by U-979 off Iceland. Frigate Ojika sunk by sub USS Springer in the Yellow Sea.
1964 Escort Carrier USS Card sunk at Saigon, probable V.C. bomb. raised, repaired, returned to service.
1982 Sub HMS Conqueror sinks Argentine Cruiser Gen. Belgrano
2011 Osama Bin Laden killed
 
May 4
1471 Battle of Tewkesbury
1799 Siege of Seringapatan ends
1862 Battle of Williamsburg/Ft. Magruder begins
1863 Battle of Chancellorsville ends
1869 naval Battle of Hakodate begins
1910 Royal Canadian Navy Est
1912 Italy occupies Rhodes
1940 Polish Destroyer Grom bombed/sunk off Narvik. Sub HMS Seal damaged by mine off Goteborg, captured the next day.
1941 Minesweeper HMS Fermoy bombed/sunk at Malta. Trawler HMS Ben Gairn sunk by mine at Lowestoft. Italian Torpedo Boat Guiseppe La Farina sunk by mine off Kerkenah
1942 Minesweeper USS Tanager sunk by artillery, and Submarine Rescue Vessel USS Pigeon bombed/sunk, and US Army Mine Planter Col. George F E Harrison bombed and damaged the day before is scuttled, all off Corregidor. Armed Merchant Cruiser Kinjosan Maru sunk by sub USS Greenling off Truk. Auxiliary Gunboat Kongosan Maru sunk by USS Trout south east of Honshu.
Battle of the Coral Sea begins: IJN Aux Minesweepers Wa-1 and 2 sunk by USN aircraft at Tulagi, Aux Minelayer Tama Maru damaged, sinks on the 6th, and Destroyer Kikutzuki bombed/beached, sinks on the 5th.
1943 USAT Onieda founders in a storm off Va. U-109 sunk by RAF B-24 south of Ireland. U-659 and U-439 sink each other in a collision.
1944 U-371 sunk by US, RN and Free French ships north of Constantine. U-846 sunk by RCAF Wellington north of Cape Ortegal
1945 LCT-1358 runs aground and sinks off California. Destroyers USS Luce and Morrison, and LSM(R)s 190 and 194 sunk by Kamakazes off Okinawa. US Patrol Craft PCM-17 ran aground off Okinawa, later refloated and scuttled in deep water. KM Minesweeper M-36 bombed/sunk in the Great Belt and M-301 off Mandel. 20 U-Boats and other KM ships scuttled.
1982 HMS Sheffield damaged by Exocet, abandoned
 
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May 6
1527 Spanish and German troops Sack Rome
1536 Siege of Cuzco begins(ends Mar. 1537)
1757 Battle of Prague
1801 Spanish Frigate El Gamo 32 captured by HMS Speedy 14
1863 Battle of Chancellorsville ends.
1935 1st flight P-36
1940 KM patrol ship V-101 sank in the Kattegat, and V-811 sunk by mine in the Ems Estuary. Trawler HMS Loch Naver sunk in a collision off Hartlepool
1941 1st flight P-47. Ocean Boarding Vessel HMS Comito sunk by U-97 southwest of Cape Clear
1942 Trawler HMS Senatuer Dahamel sunk in collision with auxiliary test and evaluation ship USS Semmes off Cape Lookout. R.N. Motor Launch ML 160 bombed/sunk at Brixton. Battle of Luzon ends with capture of Corrigidor: Gunboats USS Luzon and Oahu, and Minesweeper USS Quail, scuttled off Corrigidor
1943 U-125 rammed by Destroyer HMS Oribi, and sunk by Corvette HMS Sunflower. U-438 sunk by Sloop HMS Pelican northwest of Newfoundland. U-531 and U-630 sunk by Destroyer HMS Vidette off Newfoundland. Italian Sub Chaser C-81, Minelayer FR-60, and subs FR-116 and 117 scuttled at Bizerte.
1944 1st flight A7M Reppu fighter. U-699 rammed by Destroyer Escort USS Buckley, Germans attempt to board, sub pulls away & is shelled, then rams Buckley and scuttles. U-473 scuttled after being damaged by 3 R.N. Sloops. U-765 sunk by Swordfish from HMS Vindex
1945 Battle of Prague begins. U-853 sunk by Destroyer Escort USS Atherton and Frigate USS Mobley off Rhode Island. U-881 sunk by Destroyer Escort USS Farquhar. U-3523 sunk by RAF B-24 in the Skagerrak. MTB S-226 sunk in an air attack.
 
May 12
1780 Siege of Charles Town S.C. ends: Contenintal Navy USS Queen of France scuttled, Frigates USS Boston, Ranger and Providence, French Navy L'Aventure, Truite, Zephyr, So. Carolina Navy ships Bricole, General Moultrie, Notre Dame, Marquis de Britigney, Lee and Revenge captured, plus apx 65-70 merchant ships.
1797 France occupys Venice
1821 Battle of Valtetsi
1862 Union troops occupy Baton Rouge
1863 Battle of Raymond
1864 Battle of the Bloody Angle begins
1865 Battle of Palmito Ranch, Tx begins
1885 Battle of Batoche, Saskatchewan ends
1936 1st flight BF-110
1940 Dutch Gunboat Friso bombed/sunk off Enkhuizen, and Minelayers Bulgia and Thor off Vlissingen. HMCS Gate Vessel No. 1 sunk in a collision with Battleship HMS Revenge at Halifax.
1941 Gunboat HMS Ladybird bombed/sunk in very shallow water in Tobruk Harbor, used as AA platform
1942 2nd Battle of Kharkov begins. Minelayer Okinoshima sunk by US sub S-42 in St. Georges Channel off New Ireland. Repair Ship Shoei Maru sunk by US sub S-44 while going to assist Okinoshima northeast of Cape St. George. Destroyer HMS Jackal bombed and damaged the day before is scuttled northwest of Mersa Matrah Trawler HMS Bedfordshire sunk with all hands by U-558 off Cape Lookout. Soviet sub K-23 is sunk by KM Aux. Sub Chasers UJ-1101, 1108, and 1110 off Nordkyn, Norway. soviet Patrol Boats DK-083, SKA-0133, 0183, 0411, 0611, and 0811 bombed/sunk off Kerch.
1943 Axis forces in N. Africa surrender. U-89 sunk by Swordfish from HMS Biter and Destroyer HMS Broadway and Frigate HMS Lagan northeast of The Azores. U-186 sunk by Destroyer HMS Hesperus northeast of The Azores. U-456 sunk by RAF B-24. Motor Minesweeper HMS MMS 89 sunk by mine off Bizerta. Sub I-31 sunk by Destroyer USS Edwards off Attu. Italian MTB MAS 572 sunk in a collision with MAS 566 south of The Crimea.
1944 Soviet Minesweeper SKA-0376 sunk by U-24 in the Black Sea. KM Minesweeper TS-3 bombed/sunk in the Baltic. Romanian Minelayers Romania and Durostor sunk by Soviet aircraft in the Black Sea.
1949 Berlin Blockade ends
1968 Battle of Coral-Balmoral begins
1975 Mayaguez Incident begins
 
May 15
1525 Battle of Frankenhausen
1849 "The Two Sicilies" captures Palermo
1862 Battle of Ft. Darling
1864 Battle of New Market ends. Battle of Resaca ends
1904 Japanese Battleships Hatsuse and Yashima sunk by mines off Port Arthur
1919 Greece invades Izmir
1940 Battle of Gembloux ends. French Minesweepers Duquesne II and Henri Guegan sunk by mines off the Schelde. Destroyer HMS Valentine bombed/beached, abandonded near Terneuzen. Dutch Minelayer Hydra damaged by German anti-tank guns, beached/scuttled off Zeeland.
1941 Greek Destroyer Leon bombed/sunk at Suda Bay
1942 KM Minesweeper M-26 bombed/sunk off Cap de la Hague. Patrol ship V-2002 bombed/sunk off Terschelling. Torpedo Boat Seeadler sunk off France. Minesweepers M-26 and 256 bombed/sunk off Cherbourg, M-256 raised, repaired, returned to service. Cruiser HMS Trinidad bombed/scuttled in the Arctic Sea north of North Cape
1943 1st flight Nakajima C6N Saiun carrier recon aircraft. U-176 sunk by Cuban Sub Chaser CS-13 off Cuba, only enemy ship sunk by Cuban Navy in WWII. U-266 sunk by RAAF Halifax.
1944 U-731 sunk by Patrol ship HMS Kilmonoch and Trawler HMS Blackfly and 2 USN PBYs near Tangiers. US LCT-984 and 988 lost off Hawaii Territory.
1945 Battle of Poljana ends
1969 Unfinished sub USS Guitaro sinks while fitting out at the Mare Island Navy Yard. Raised, repaired, put in service.
1975 Mayaguez Incident ends
 
May 16
1771 Battle of Alamance
1811 Battle of Albuera
1834 Battle of Asseiceira
1863 Battle of Champion's Hill
1864 2nd Battle of Drewry's Bluff
1941 UK Troopship Archangle bombed/beached & broken up south of Newburgh
1942 R.N. MTB 338 exploded and burned at Trinidad
1943 "Dambuster Mission", night of 16-17th. U-182 sunk by Destroyer USS Mackenzie near Madeira. U-463 sunk by RAF Halifax in Bay of Biscay
1944 I-176 sunk by 3 US Destroyers off Buka. U-616 damaged by RAF Wellington and 7 US Destroyers, scuttled.
1945 U-287 mined or scuttled at Attenbach. Minelayer Hatsutaka sunk by Sub USS Hawkbill in Gulf of Thailand. Battle of Malucca Strait: Cruiser Haguro sunk by 4 R.N. Destroyers , last surface to surface battle of the War.
 
May 18
1268 Siege of Antioc ends
1302 Bruges Massacre
1565 Siege of Malta begins(ends Sept 11)
1775 Armed Schooner Liberty, under Gen. Benedict Arnold, captures HMS Royal George and troops aboard capture Ft. Saint-Jean, Quebec. Royal George renamed Enterprise, 1st US warship with that name.
1811 Battle of Las Piedras
1863 Battle of Vicksburg begins
1940 Germans capture Antwerp. Cruiser HMS Effington wrecked on Faksen Shoals, scuttled May 21. Germans capture abandond Norwegian Sub B 6, Destroyer Troll and Torpedo Boat Snogg at Floro, enter KM service as UC-2, Troll and Zack
1941 Trawler HMS Jewel sunk by mine in Belfast Lough. RFA Tanker Olna bombed/beached at Suda Bay, repaired and put in German service
1943 Battle of Monte Cassino ends. CAM ship SS Empire Eve sunk by U-414 off Algeria. KM Minesweeper M-345 bombed/sunk off Dunkirk
1944 Dutch MTB Arend sunk by mine off Boulogne.
1945 Destroyer USS Longshaw runs aground off Naha, Okinawa and is sunk by shore batteries
2009 Sri Lankan Civil War ends
 
May 19
1445 1st Battle of Olmedo
1643 Battle of Rocroi
1655 England invades Jamaica
1776 American troops at The Cedars, Quebec, surrender
1864 Battle of Spotsylvania Courthouse ends
1865 Ironclad CSS Stonewall surrenders to Spanish authorities at Havana
1940 Destroyer HMS Whitley bombed/beached/scuttled off Ostend. Aux. Minelayer HMS Princess Victoria sunk by mine of the mouth of the Humber. French aux Minesweeper Augustin Normand bombed/sunk at Le Havre. KM Naval Trawler Albion sunk by Norwegian Naval Trawler Honningsvag and Naval Cargo ship Heilhorn in the Stromoyene Islands
1941 Armed Yacht HMS Sea Angler burns/sinks
1943 U-273 sunk by RAF Hudson. U-953 sunk by HMS Jed and Senen south east of Cape Farewell, Greenland. Armed Merchant Cruiser Bangkok Maru sunk by USS Pollock off Jaluit Atoll.
1944 U-960 sunk by Destroyers USS Niblack and Ludlow and RAF Wellingtons and Venturas. U-1015 sunk in a collision with U-1014 west of Pillau. I-16 sunk by Destroyer Escort USS England off the Solomon Islands
1945 Norwegian MTB 715 sunk by an explosion at Fosnevaag
 
May 20
685 Battle of Dun Nechtain
1217 Battle of Lincoln
1449 Battle of Alfarrobeira
1521 Battle of Pampeluma
1522 Siege of Genoa begins
1631 Madgeburg Massacre
1645 Siege of Yangzhou ends, Yangzhou Massacre begins
1813 Battle of Bautzen Begins
1859 Battle of Montebello
1863 Confederates evacuate Yazoo City destroying the Yazoo City Navy Yard and 3 warships under construction there.
1864 Battle of Ware Bottom Church
1917 1st submarine to be sunk by an airplane was U-36 by a British flying boat
1940 Trawler HMS Rifsnes bombed/sunk off Ostend.
1941 Battle of Crete starts. Italian Destroyer Cartatone sunk by mine near Athens. Minesweeper HMS Widnes bombed/beached/abandoned at Suda Bay. Whaler HMS KOS XXIII bombed/beached
1942 Battle of Burma ends. USN Patrol Boat YP-87 sunk in a collision off Delaware.
1943 U-258 sunk by RAF B-24 west of Ireland
1944 Dutch Minesweeper Marken sunk by mine in the Thames Estuary. Trawler HMS Wyoming sunk by mine east-north-east of Harwich.
1945 U-963 scuttled off the coast of Portugal. US LST-808 damaged by Kamakaze off Okinawa, beached at Ie Shima, destroyed in a typhoon later.
1969 Battle of Hamburger Hill ends
 
May 22
853 Byzantines sack Damietta, Egypt
1455 1st Battle of St. Albans
1809 Battle of Aspern-Essling ends
1863 Siege of Port Hudson begins
1864 Red River Campaign ends
1939 Germany and Italy sign the "Pact of Steel".
1940 Belgian Naval Yacht Aloha sunk by mine off Ostend
1941 Cruisers HMS Fiji and Gloucester, and Destroyer HMS Greyhound bombed/sunk off Crete. Dutch Minelayer Nautilus sunk in a collision with SS Murrayfield off Saltfleet
1942 Mexico declares War on The Axis. Soviet MTBs STS-123 and TKA-105 sunk by artillery at Leningrad.
1943 U-569 damaged by Avengers and scuttled.
1944 Destroyer Asanagi sunk by USS Pollock northwest of Chichi Jima. RO-106 sunk by Destroyer Escort USS England north of the Admiralty Islands
1945 Gunboat Hashidate sunk by sub USS Picuda. IJN Sub Chasers CH-37 and 58, and Landing Ship T-173 bombed/sunk by USN aircraft in the East China Sea. KM Minesweeper M-515 sunk by mine at Fehman
1968 Sub USS Scorpion sinks
 
May 28
585 B.C. Battle of the Eclipse
621 Battle of Hulao
1754 Battle of Jumanville Glen
1905 Battle of Tsushima ends
1935 1st flight BF-109
1940 Battle of Belgium ends, Belgium surrenders. Minesweeper HMS Brighton Belle struck a wreck and sinks in The Downs. Trawler HMS Thomas Bartlett sunk by mine off Calais. Trawler HMS Thuringia sunk by mine in the North Sea. Trawler HMS Ocean Reward sunk in a collision with SS Isle of Thanet off Dover. French Aux. Minesweeper Marguerite Rose bombed/sunk at Dunkirk
1941 Destroyer HMS Mashona bombed/sunk off Ireland. R.N. Motor Launch ML 1030 lost south of Crete
1942 2nd Battle of Kharkov ends. KM Sperrbrecher 174 sunk by mine north west of Dunkirk.
1943 U-304 sunk by RAF B-24 southeast of Cape Farewell. U-755 sunk by RAF Hudson north of Mallorca. Seaplane Tender Kamikawa Maru sunk by USS Scamp in the Bismarck Sea. Italian Corvette FR 52 sunk at Leghorn by Allied aircraft. Torpedo Boat Antares sunk ay Livorno by US aircraft.
1944 R.N. MTB 732 sunk by Free French Destroyer La Combattante in the English Channel. KM Sub Chaser UJ-2210 sunk by PT Boats off Italy. Minelayer Vallelunga sunk at Genoa by Allied aircraft.
1945 IJN Coast Defence Frigate CD-59 severly damaged by mine off Sasebo and not repaired. Destroyer USS Drexler sunk by Kamakazes off Okinawa
1991 Ethiopian rebels capture Adis Ababa, Ethiopian Civil War ends
 
May 29
363 Battle of Ctesiphon
1108 Battle of Ucles
1167 Battle of Tusculum
1176 Battle of Legnano
1453 Siege of Constantinople ends
1780 Battle of Waxhaws
1781 Frigate USS Alliance captures Sloops HMS Atalanta and HMS Trepassey
1798 Gibbet Rath Massacre
1895 Japan invades Formosa
1918 Battle of Sardarabad ends
1935 1st flight Bf-109
1940 1st flight F4U Corsair. Sloop HMS Bideford bombed/beached, refloated, repaired, returned to service, Trawlers HMS Calvi and HMS Polly Johnson bombed/sunk, Minesweepers HMS Gracie Fields and Waverly bombed/sunk, Destroyer HMS Grenade bombed/sunk, Aux. Anti-Aircraft ship HMS Crested Eagle bombed/sunk, all off Dunkirk. Destroyer HMS Wakefull sunk by E Boat S-30 in the English Channel. Destroyer HMS Montrose damaged in a collision with Sun V off Calaise, beached, refloated, repaired, returned to service. Destroyer HMS Grafton damaged by U-62 and scuttled off Neuport. French Aux Minesweeper Joseph Marie bombed/sunk at Dunkirk. KM patrol ship Vp-1109 sunk by mine off Norway
1941 Destroyers HMS Hereward and Imperial bombed/sunk off Crete. Trawler HMS Sindonis bombed/sunk at Tobruk
1942 1st flight CAC CA-12 Boomerang Fighter. U-568 sunk by 3 R.N. ships northeast of Tobruk. Sperrbrecher 150 sunk by mine off Dunkirk. Italian Destroyer Emmanuele Pessagno sunk by a sub north west of Benghazi.
1943 R.N. MGB 110 sunk by KM ships off Dunkirk
1944 Escort Carrier USS Block Island sunk by U-549, in turn sunk by Destroyer Escorts USS Aherns and Eugene E. Elmore. Km Minesweeper R-123 sunk at Le Havre by Allied aircraft.
1945 R.N. LCT 357 sunk by an explosion in Suda Bay
1982 Battle of Goose Green ends
 
May 31
1223 Battle of the Kalka River
1805 Battle of Diamond Rock begins
1862 Battle of Fair Oaks and Seven Pines begin
1864 Battle of Cold Harbor begins
1915 1st Zeppelin raid on London.
1916 Battle of Jutland begins
1940 U-13 sunk by Sloop HMS Weston southeast of Lowestoft. French Destroyer Sirocco torpedoed by E Boats S-23 and 26, then bombed/sunk off Dunkirk. Trawler HMS St. Achillaeus sunk by mine and Minesweeper HMS Devonia bombed/beached/abandoned off Dunkirk, LCA 8 & 15 lost on board. Armed Yacht HMS Grive bombed/damaged, then sunk by mine.
1941 Anglo-Iraq War ends.
1942 Sydney Harbor Raid: IJN Midget sub M-27b fouls an anti-sub net trying to enter the Harbor, crew scuttles the sub killing them.
1943 U-563 sunk by RAAF Sunderland and an RAF Halifax in the Atlantic. U-440 sunk by RAF Sunderland northwest of Cape Ortegal
1944 Frigate Ishigaki sunk by USS Herring. RO-105 sunk by Destroyer Escort USS England northwest of the Admiraltys. Gunboat Kotaka bombed/sunk in the Yangtze. U-289 sunk by Destroyer HMS Milne northeast of Jan Mayen. KM Minesweeper M-13 sunk by mine in the Geronde Estuary.
1945 I-361 sunk by an Avenger from USS Anzio southeast of Okinawa
 
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