Johlerpow and Zale et al.

April 3, 1942 – Japanese attack U.S. and Filipino troops at Bataan.

April 6, 1942 – First U.S. troops arrive in Australia.

April 9, 1942 – U.S. forces on Bataan surrender unconditionally to the Japanese.

April 10, 1942 – Bataan Death March begins as 76,000 Allied POWs including 12,000 Americans are forced to walk 60 miles under a blazing sun without food or water toward a new POW camp, resulting in over 5,000 American deaths.

April 18, 1942 – Surprise U.S. ‘Doolittle’ B-25 air raid from the HORNET against Tokyo boosts Allied morale.

April 29, 1942 – Japanese take central Burma

http://www.historyplace.com/unitedstates/pacificwar/timeline.htm