Final answer:
The ambush that changed World War II's Pacific theater dynamics was orchestrated by Admiral Isoroku Yamamoto, but Admiral Chester Nimitz turned the tables with a counter-ambush at the Battle of Midway, sinking four Japanese carriers.
Step-by-step explanation:
The ambush that changed the course of World War II in the Pacific six months after Pearl Harbor was set up by Admiral Isoroku Yamamoto. Yamamoto, the Japanese Naval commander who originally had reservations about attacking the United States, sought to gain a decisive victory to cripple the U.S. Navy by targeting the remaining American carriers after the attack on Pearl Harbor. He aimed to trap and destroy these carriers at the Battle of Midway. However, the United States had broken Japanese military codes and were aware of the attack plans. Admiral Chester Nimitz, commander of the U.S. Pacific Fleet, successfully planned a counter-ambush that turned the tide. The Battle of Midway took place in June 1942, when U.S. forces surprised the Japanese by sinking four of their aircraft carriers, marking a turning point in the war.