Which battle halted Japanese expansion in the Pacific in 1942 and is considered a turning point of the war?

• A. Battle of Midway
• B. Guadalcanal
• C. Battle of Leyte Gulf
• D. Battle of Coral Sea

Answer: (A)

The main idea this question tests is how a single, decisive naval battle changed who held the initiative in the Pacific War. At Midway in June of 1942, American forces met the Japanese fleet after codebreaking helped reveal Japan’s plan. The battle ended with the loss of four Japanese aircraft carriers and a heavy blow to their naval air power. That destruction crippled Japan’s ability to wage rapid, expansive offensives across the Pacific and shifted the balance of naval power to the United States, enabling a shift from defense to offense for the Allies in the months that followed.

This isn’t about a later or smaller engagement. The Battle of Midway is recognized as the turning point of the war in the Pacific because it erased Japan’s previous advantage at sea and set up the Allied island-hopping campaigns that would eventually push toward Japan. The Coral Sea, while preventing an invasion of Australia, did not deal the same strategic, long-term impact on Japan’s carrier strength. Guadalcanal contributed to wearing down Japanese forces and keeping pressure on their expansion, but Midway is the moment widely cited as changing the overall momentum.