Sunday marked the 75th Anniversary of the beginning of the Battle of Midway. In the battle the US Navy faced off against the Japanese Navy.
This led Yamamoto to believe that he would be facing two US Aircraft Carriers at best (the USS Enterprise and USS Hornet). The Yorktown was able to limp back to Pearl Harbor and expedited repairs were carried out on her and she was able to join the American Task Force at Midway.
The thing he didn't count on was that the US had broken the Japanese Naval code at this point and was aware what the main target was. The US Force under the command of Admiral Spruance was able to take position off Midway that would give them maximum tactical advantage.
Despite being such bitter enemies during World War II, the Japanese and Americans because very good friends after the war. Sure there are some bad moments, but when doesn't that happen.