OCTOBER 30
1270 - The Eighth Crusade and siege of Tunis end by an agreement between Charles I of Sicily (brother to King Louis IX of France, who had died months earlier) and the sultan of Tunis.
1340 - Battle of Rio Salado
1470 - Henry VI of England returns to the throne after Earl of Warwick defeats Yorkists in battle.
1864 - Second war of Schleswig ends: Duke Frederick and the Danish Crown recognize Prussia's and Austria's annexation of Schleswig, Holstein and Lauenburg.
1918 - The Ottoman Empire signs an armistice with the Allies, ending the First World War in the Middle East
1941 - World War II: Franklin Delano Roosevelt approves US$1 billion in Lend-Lease aid to the Soviet Union.
1965 - Vietnam War: Just miles from Da Nang, United States Marines repel an intense attack by wave after wave of Viet Cong forces, killing 56 guerrillas. Among the dead, a sketch of Marine positions was found on the body of a 13-year-old Vietnamese boy who sold drinks to the Marines the day before.
1970 - In Vietnam, the worst monsoon to hit the area in six years causes large floods, kills 293, leaves 200,000 homeless and virtually halts the Vietnam War.
1980 - El Salvador and Honduras sign a peace treaty to put the border dispute fought over in 1969's Football War before the International Court of Justice.
source:
http://en.wikipedia.org/wiki/October_30
October 30, 1944: In Hungary, the Red Army begins an offensive aimed at the capital, Budapest.
source:
http://www.feldgrau.com/october.html