Certainly a monumental "battle", but I think the Japanese could have been defeated without it, even with a horrific loss of life. I think Pearl Harbor is a good candidate (if you could even call it a battle). I think the U.S. entering the war was a huge relief to Britain and allies and I'm not sure if the war could have been won without the U.S.
Where do you get your data? The USN lost a total of four CV's (Fleet carriers); in order, Lexington, Yorktown, Wasp, Hornet. No US fleet carriers were lost after Hornet, although a couple of CVL,'s and a handful of escort carriers were lost. Had the US lost all it's three carriers at Midway, it still would have had more carriers that Japan (7 CV's 7 CVL's, 850 planes to 6 CV's, 2 CVL's, 560 planes) no later than the end of 1943. By the middle of 1944, the USN would have had nearly a 2 to 1 advantage in carriers and planes over Japan. Losing at Midway would have delayed victory in the Pacific war by perhaps nine to twelve months, no more. Here's the actual breakdown in numbers. [SIZE=+1]Date[/SIZE] [SIZE=+1]American CVs / CVLs (# of aircraft) [SIZE=-1](ships in bold indicate new builds)[/SIZE][/SIZE] [SIZE=+1]Total Ships / Total Aircraft[/SIZE] [SIZE=+1]Japanese CVs / CVLs (# of aircraft) [SIZE=-1](ships in bold indicate new builds)[/SIZE][/SIZE] [SIZE=+1]Total Ships / Total Aircraft[/SIZE] 7/1/42- 12/31/42 Saratoga (88), Wasp (76) 2 CV 164 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Ryujo (38), Zuiho (30) 6 CV 2 CVL 561 1/1/43- 6/30/42 Saratoga (88), Wasp (76), Essex (82), Independence (33), Princeton (33) 3CV 2 CVL 321 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Ryujo (38), Zuiho (30) 6 CV 2 CVL 561 7/1/43- 12/31/43 Saratoga (88), Wasp (76), Essex (91), Bunker Hill (91), Yorktown (91), Lexington II (91), Intrepid (91), Independence (33), Princeton (33), Belleau Wood (33), Cowpens (33), Monterey (33), Langley (33), Cabot (33) 7 CV 7 CVL 850 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Ryujo (38), Zuiho (30) 6 CV 2 CVL 561 1/1/44- 6/30/44 Saratoga (88), Wasp (76), Essex (91), Bunker Hill (91), Yorktown (91), Lexington (91), Wasp II (91), Intrepid (91), Hornet II (91), Franklin (91), Independence (33), Princeton (33), Belleau Wood (33), Cowpens (33), Monterey (33), Langley (33), Bataan (33), San Jacinto (33) 10 CV 9 CVL 1189 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Ryujo (38), Zuiho (30), Chiyoda (30), Chitose (30) 6 CV 4 CVL 621 7/1/44- 12/31/44 Saratoga (88), Wasp (76), Essex (91), Bunker Hill (91), Yorktown (91), Lexington (91), Wasp (91), Intrepid (91), Hornet (91), Franklin (91), Ticonderoga (91), Hancock (91), Bennington (91), Shangri-La (91), Independence (33), Princeton (33), Belleau Wood (33), Cowpens (33), Monterey (33), Langley (33), Bataan (33), San Jacinto (33) 14 CV 9 CVL 1,553 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Taiho (60), Unryu (65), Amagi (65), Ryujo (38), Zuiho (30), Chiyoda (30), Chitose (30) 9 CV 4 CVL 811 1/1/45- 6/1/45 Saratoga (88), Wasp (76), Essex (91), Bunker Hill (91), Yorktown (91), Lexington (91), Wasp (91), Intrepid (91), Hornet (91), Franklin (91), Ticonderoga (91), Hancock (91), Bennington (91), Shangri-La (91), Bon Homme Richard (91), Randolph (91), Antietam (91), Independence (33), Princeton (33), Belleau Wood (33), Cowpens (33), Monterey (33), Langley (33), Bataan (33), San Jacinto (33) 17 CV 9 CVL 1,826 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Taiho (60), Unryu (65), Shinano (45), Amagi (65), Katsuragi (65), Ryujo (38), Zuiho (30), Chiyoda (30), Chitose (30) 11 CV 4 CVL 941 7/1/45- 12/31/45 Saratoga (88), Wasp (76), Essex (91), Bunker Hill (91), Yorktown (91), Lexington (91), Wasp (91), Intrepid (91), Hornet (91), Franklin (91), Ticonderoga (91), Hancock (91), Bennington (91), Shangri-La (91), Bon Homme Richard (91), Randolph (91), Antietam (91), Coral Sea (120), Lake Champlain (91), Boxer (91), Independence (33), Princeton (33), Belleau Wood (33), Cowpens (33), Monterey (33), Langley (33), Bataan (33), San Jacinto (33) 20 CV 9 CVL 2,128 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Taiho (60), Unryu (65), Shinano (45), Amagi (65), Katsuragi (65), Kasagi (?) (65), Ryujo (38), Zuiho (30), Chiyoda (30), Chitose (30), Ibuki (?) (27) 12 CV 5 CVL 1,033 1/1/46- 6/30/46 Saratoga (88), Wasp (76), Essex (91), Bunker Hill (91), Yorktown (91), Lexington (91), Wasp (91), Intrepid (91), Hornet (91), Franklin (91), Ticonderoga (91), Hancock (91), Bennington (91), Shangri-La (91), Bon Homme Richard (91), Randolph (91), Antietam (91), Lake Champlain (91), Boxer (91), Kearsarge (91), Princeton II (91), Oriskany (91), Tarawa (91), Coral Sea (120), Franklin Roosevelt (120), Independence (33), Princeton (33), Belleau Wood (33), Cowpens (33), Monterey (33), Langley (33), Bataan (33), San Jacinto (33) 25 CV 9 CVL 2,612 Kaga (90), Akagi (91), Soryu (71), Hiryu (73), Zuikaku (84), Shokaku (84), Taiho (60), Unryu (65), Shinano (45), Amagi (65), Katsuragi (65), Kasagi (?) (65), Aso (?) (65), Ikoma (?) (65), Ibuki (?) (27), Ryujo (38), Zuiho (30), Chiyoda (30), Chitose (30) 14 CV 5 CVL 1,163 The Essex class carriers were built in an average of 18 months, one was launched 14 months from the keel laying and that was early in the war before American production methods hit their stride. The carriers were expensive but many more Essex class could have been built without putting even a modest dent in the US war budget.
I think - agree with C. Evans - there was too many important battles in this war. But I think very importnat battle was 1./ El Alamein- if Rommel beat Britains, Rommel could occupy MiddleEast, Suez, and it's mean that German could control the Medditerranean 2./ Moscow-Stalingrad-Kursk- defeat moral, because it's mean that German not unbeatable 3./ D-Day and Battle of Normandy (many battles: Carentan, Caen, Cherbourg, Falaise etc.)- this was the base of the final defeat of Germany ps. sorry my wrong english
Suez possibly but that's about all he's got the logistics for and he probably couldn't hold that if the British wanted to take it back. Very good point about it being difficult to impossible to pick out a most important battle.
I give a lot of credit to the industrial might of America. We supplied Ships, food, and war materials to Britain and Russia. Not counting keeping the Germans busy in Italy and the Second front in Europe. If all German forces were available.. Russia would not exist today.Without US support Britain could never have invaded Western Europe.