How many Americans were lost in battles with Japan during World War 2?

Question

I'm going to participate in a debate on whether the atomic bombings were justified in World War 2. I'd like to be able to prove that we had already lost tons of Americans to Japan in previous battles. Please include a source that isn't Wikipedia. Thanks.

Answer 1

Pearl Harbor (Dec 7, 1941): 2403 dead, 1178 wounded

Battle of the Coral Sea (1942) - 543 dead
Battle of Midway (1942) - 307 killed

Battle of Guadalcanal (Aug 1942 - Feb 1943):
1768 dead (ground), 4,911 dead (naval), 420 dead (aircrew)

Battle of Tarawa (Nov 1943) - 1001 dead, 2296 wounded

Battle of Saipan (June-July 1944): 3426 killed; 13,160 wounded

Battle of Leyte Gulf, Phillipines (Oct 1944): 3500 dead

Battle of Iwo Jima (Feb-Mar 1945): 4197 killed in action; 19,189 wounded; 1,401 died of wounds; 494 missing

Battle of Okinawa (Apr-June 1945): 12,513 dead or missing;
38,916 wounded

Most of these are from Wikipedia, but can be confirmed from various other sources, if you look up individual battles.