1940: Hitler issues Directive No. 21, ordering plans for the preparation of Operation Barbarossa, the attack against the Soviet Union, to be submitted by May 15, 1941.
1941: Field Marshal von Brauchitsch resigns as head of OKH, Hitler himself assuming personal command of the Heer, especially of its operations on the Eastern front.
1944: In the West, Operation Wacht am Rhein begins to bog down in the face of stiffened US resistance and lack of adequate logistical support, notably fuel for the armored Kampfgruppen of Dietrich's and Manteuffel's armies.
1944: 'Arty' Hill, Bougainville, captured - 'Arty Hill', as it was known, was captured by the Queensland 9th Battalion, and was a major Japanese position on the Numa Numa Trail leading across Bougainville.
source: http://www.awm.gov.au/atwar/thismonth/index.asp 1813: Lewiston New York - John Murray leads 500 British and Canadians in capture of old Fort Niagara from the Americans in the War of 1812; Fort Niagara; captures 300 prisoners; Phineas Riall leads party of Indians in 2 week raid on Manchester, Fort Schlosser, Black Rock and Buffalo. 1941: Kowloon, Hong Kong - Japanese troops cross the Lye Mun Passage after dark, in assault boats, landing craft and small boats towed by ferry steamers, to attack Hong Kong island; two platoons of the Winnipeg Grenadiers deployed to seize the hills known as Jardine's Lookout and Mount Butler where they engaged in intense fighting; heavily outnumbered, they are cut to pieces and both platoon commanders killed; the following day Brigadier Lawson is killed when the Japanese surround his West Brigade headquarters. All British and Canadian forces in Hong Kong will surrender on Christmas Day; Canadians lose 290 dead in battle, with 493 wounded; a total of 557 were killed or later died in Japanese prison camps. 1950: Pusan Korea - 2nd Battalion, Princess Patricia's Canadian Light Infantry, lands at Pusan; first Canadian troops in Korea.
1916: The Battle of Verdun, the longest engagement of World War I, ends on this day after ten months and close to a million total casualties suffered by German and French troops. The massive loss of life at Verdun—143,000 German dead out of 337,000 casualties, to France’s 162,440 out of 377,231—would come to symbolize, more than that of any other battle, the bloody nature of trench warfare on the Western Front.
source: http://www.history.com/tdih 1902 - Admiral of the Navy George Dewey receives orders to send his battleship to Trinidad and then to Venezuela to make sure that Great Britain's and Germany's dispute with Venezuela was settled by peaceful arbitration not force.
1944 - Admiral Halsey's Third Fleet encounters typhoon northeast of Samar. Destroyers USS Hull, USS Monaghan and USS Spence sink, while 21 other ships are damaged.
1965 - River Patrol Force established in Vietnam.
1965 - Helicopters from HS-11 on USS Wasp (CVS-18) pick up crew and capsule of Gemini 7, after picking up the crew and capsule of Gemini 6 two days earlier.
1967 - Operation Preakness II begins in Mekong Delta.
1972 - Mining and bombing of North Vietnam resumes with Linebacker II Operation.