The most decisive Naval battle of WWII changed the course of the war. This is a very good day by day and blow by blow description of the battle, including the battle of Coral Sea which took place shortly before, and had influence on the Battle of Midway. A single day changed the course of the war, and Japan went from the offense to defense.
Carriers lost at the Battle of Midway. the Japanese lost over 3000 men, and all the planes and most of the pilots involved. The pilots were mostly killed in their planes on the decks of the carriers. The United States lost over 300 men, and two thirds of the aircraft involved.