Kamilisha sentensi ifuatayo: 164th Infantry Regiment of the Americal Division went into action on Guadalcanal on 13 October 1942 alongside the 1st Marine Division as the first United States Army unit to conduct an offensive operation against the enemy in either the Pacific or European Theater of Operations during World War II. Majeshi mengine nane ya Marekani yalianza shughuli za kijeshi mwishoni mwa 1942: Majeshi ya 32 na ya 41 ya Jeshi la Waasi katika Pasifiki ya New Guinea; na katika
Afrika Kaskazini, 1st, 3rd, 9th, na 34th Infantry Divisions, na 1st na 2nd Armored Divisions.