Kammala jumla mai zuwa: 1942 ya ga rundunonin tsaro na Marine sun ƙarfafa, sake sakewa da girma. A ranar 4 ga watan Yuni, Marines na 6th Defense Battalion a Midway Island ya kare wani harin iska na Japan, wanda ya taimaka wajen nasarar da aka samu a cikin
yaƙi na teku daruruwan mil daga nan. A ranar 7 ga watan Agusta, Batun Tsaro na 3 ya sauka a Guadalcanal don tallafawa Rukunin Sojojin Ruwa na 1. Bayan da aka tabbatar da filin jirgin sama na Henderson, rundunar ta dauki tsaro na kewaye da kuma mayar da wasu hare-haren abokan gaba.