Question:  Between the Battle of Pusan Perimeter and The Battle of Luzon which had the most combatants?
Sentence (from "Battle of Luzon"): The Battle of Luzon, fought 9 January – 15 August 1945, was a land battle of the Pacific Theater of Operations of World War II by the Allied forces of the U.S., its colony the Philippines, and allies against forces of the Empire of Japan.
Relevant evidence: Yes