Question: When did Germany launch an air attack on the country the U.S. fought during the American Revolution?

Knowledge 1: American Revolutionary War
The American Revolutionary War (1775 -- 1783), also known as the American War of Independence, was an 18th - century war between Great Britain and its Thirteen Colonies (allied with France) which declared independence as the United States of America. [SEP] Knowledge 2: Battle of Britain
Battle of Britain Part of the Second World War An Observer Corps spotter scans the skies of London. Date 10 July -- 31 October 1940 (3 months and 3 weeks) Location British airspace Result British victory Belligerents United Kingdom Canada Germany Italy Commanders and leaders Hugh Dowding Keith Park T. Leigh - Mallory Quintin Brand Richard Saul L. Samuel Breadner Zdzisław Krasnodębski Hermann Göring Albert Kesselring Hugo Sperrle Hans - Jürgen Stumpff R.C. Fougier Units involved Royal Air Force Royal Canadian Air Force Foreign pilots from (show) Poland New Zealand Czechoslovakia Belgium Australia South Africa France Ireland United States Southern Rhodesia Jamaica Barbados Newfoundland Northern Rhodesia Luftwaffe Corpo Aereo Italiano Strength 1,963 serviceable aircraft 2,550 serviceable aircraft. Casualties and losses 1,542 aircrew killed 422 aircrew wounded 1,744 aircraft destroyed 2,585 aircrew killed and missing, 925 captured, 735 wounded 1,977 aircraft destroyed, 1,634 in combat and 343 non-combat Around 90,000 civilian casualties, 40,000 of them fatal.
Knowledge 1: American Revolutionary War
The American Revolutionary War (1775 -- 1783), also known as the American War of Independence, was an 18th - century war between Great Britain and its Thirteen Colonies (allied with France) which declared independence as the United States of America. [SEP] Knowledge 2: Triple Alliance (1882)
The Triple Alliance was a secret agreement between Germany, Austria - Hungary, and Italy. It was formed on 20 May 1882 and renewed periodically until it expired in 1915 during World War I. Germany and Austria - Hungary had been closely allied since 1879. Italy sought support against France shortly after it lost North African ambitions to the French. Each member promised mutual support in the event of an attack by any other great power. The treaty provided that Germany and Austria - Hungary were to assist Italy if it was attacked by France without provocation. In turn, Italy would assist Germany if attacked by France. In the event of a war between Austria - Hungary and Russia, Italy promised to remain neutral.
Knowledge 1: American Revolutionary War
The American Revolutionary War (1775 -- 1783), also known as the American War of Independence, was an 18th - century war between Great Britain and its Thirteen Colonies (allied with France) which declared independence as the United States of America. [SEP] Knowledge 2: United States declaration of war upon Germany (1941)
December 11, 1941, the United States Congress declared war upon Germany (Pub. L. 77 -- 331, Sess. 1, ch. 564, 55 Stat. 796), hours after Germany declared war on the United States after the Japanese attack on Pearl Harbor. The vote was 88 -- 0 in the Senate and 393 -- 0 in the House.

Answer: 10 July -- 31 October 1940