On December 10, 1941, the 400-man garrison on Guam was overwhelmed by 5,000 Naval Marines of the Imperial Japanese Navy in a few hours of fighting. Guam would not be the scene of fighting again until 1944.
By that time, the US Pacific Fleet had made good their losses at Pearl Harbor and even their losses in the Solomons. It is testimony to American industry that while landings were made in Normandy, another fleet was anchored off Guam in the Marianas.