1943

January
2nd Allies take Buna in New Guinea
22nd Allies defeat Japanese at Sanananda on New Guinea


February
1st Japanese begin evacuation of Guadalcanal
8th British-Indian forces begin guerrilla operations against Japanese in Burma
9th Japanese resistance on Guadalcanal ends


March
2nd – 4th U.S. victory over Japanese in the Battle of Bismarck Sea


April
18th .S. code breakers pinpoint the location of Japanese Admiral Yamamoto flying in a Japanese bomber near Bougainville in the Solomon Islands. Eighteen P-38 fighters then locate and shoot down Yamamoto
21st President Roosevelt announces the Japanese have executed several airmen from the Doolittle Raid
22nd Japan announces captured Allied pilots will be given "one way tickets to hell”


May
10th U.S. troops invade Attu in the Aleutian Islands
14th A Japanese submarine sinks the Australian hospital ship CENTAUR resulting in 299 dead
31st Japanese end their occupation of the Aleutian Islands as the U.S. completes the capture of Attu


June
1st U.S. begins submarine warfare against Japanese shipping
21st Allies advance to New Georgia, Solomon Islands


July
8th B-24 Liberators flying from Midway bomb Japanese on Wake Island


August
1st – 2nd A group of 15 U.S. PT-boats attempt to block Japanese convoys south of Kolombangra Island in the Solomon Islands. PT-109, commanded by Lt. John F. Kennedy, is rammed and sunk by the Japanese Cruiser AMAGIRI, killing two and badly injuring others. The crew survives as Kennedy aids one badly injured man by towing him to a nearby atoll
6th – 7th Battle of Vella Gulf in the Solomon Islands
25th Allies complete the occupation of New Georgia


September
4th Allies recapture Lae-Salamaua, New Guinea


October
7th Japanese execute approximately 100 American POWs on Wake Island
26th Emperor Hirohito states his country's situation is now "truly grave”


November
1st U.S. Marines invade Bougainville in the Solomon Islands
2nd Battle of Empress Augusta Bay
20th U.S. troops invade Makin and Tarawa in the Gilbert Islands
23rd Japanese end resistance on Makin and Tarawa


December
15th U.S. troops land on the Arawe Peninsula of New Britain in the Solomon Islands
26th Full Allied assault on New Britain as 1st Division Marines invade Cape Gloucester