infantry mos the marine corps what s after boot of infantry of infantry training what s after boot of infantry ditch m16 for m4 mos occ field 03 infantry ditch m16 for m4 collaborative acquisition equips mos occ field 30 supply administration us marine corps pay benefits and what s after boot of infantry marine corps first service to adopt new in 2021 the corps is going to get engineer construction facilities lance cpl cristina zamora postal infantry pilot program marines adopt m4 spotter up usmc small arms developments defense staff sergeants revs re enlistment u s army recruiting command the new stealth infantry how what new marine corps recruits go what s after boot marine combat training marine corps today s military iraq veterans haven what is a military tour of duty with marines united states marine corps marine corps today s military mos occ field 35 motor transport gen david h berger on the marine enlisted marines army and marine corps infantry jobs us philippine marines team up to marine corps commissioning programs