Kammala jumla mai zuwa: Rundunar 'yan bindiga ta 164 na Rundunar Amurka ta shiga aiki a Guadalcanal a ranar 13 ga Oktoba 1942 tare da Rukunin Marine na 1 a matsayin rukunin farko na Sojojin Amurka don gudanar da wani mummunan aiki a kan abokan gaba a ko dai Pacific ko Turai Theater of Operations a lokacin yakin duniya na biyu. Sauran rundunonin sojojin Amurka guda takwas sun fara ayyukan yaki a karshen 1942: 32nd da 41st Infantry Divisions a cikin Pacific a New Guinea; kuma a
Arewacin Afirka, 1st, 3rd, 9th, da kuma 34th Infantry Divisions, da kuma 1st da 2nd Armored Divisions.