World war two battles By Cameroon Dec 7, 1941 Attack on Pearl Harbor The Japanese attack bring the us into both the pacific and the European theaters Dec 10, 1941 Japanese invade the Philippines and guam Period: Dec 18, 1941 to Dec 25, 1941 Battle of hong kong Feb 8, 1942 Japanese invade singapore May 12, 1942 Japanese take the philippines Jun 4, 1942 Battle of midway Jun 2, 1943 Allies take new guinea Jun 15, 1944 Allies invade saipan Apr 1, 1945 Allies land in okinawa Sep 2, 1945 V i c t o r y I n T h e P a c i f i c