The 03 Occupational Career Field ka US Marine Corps ke lihlomo tsa ntoa tse amanang le 'ona.
Matsoalo a USMC ke matla a fatše a koetliselitsoeng ho fumana, ho atamela le ho timetsa sera ka mollo le ho tsamaisa, kapa ho tsosolosa tlhaselo ea sera ka mollo le ntoa e haufi. Riflemen (0311) e sebetsa e le lihlopha tsa masole, 'me e sebetsa e le li-scouts, mabotho a hlaselang, le mabotho a haufi a ntoa ka hare ho sehlopha se seng le se seng sa masea.
Bana ba nang le bokooa ke bahlabani ba nang le boithati ba fanang ka mekhoa e metle linthong tse ferekanyang le tse sa tsitsang tsa mathata le likhohlano.
Ba sebelisa libetsa tse sa tšoaneng le lisebelisoa. Ka lithuso tsa melaetsa, ho tšehetsa lithunya, lithunya tsa metsing, le tšehetso ea moea o haufi-ufi; marotholi a USMC a khona ho loantša lits'ebeletso tsa bohlokoa sebakeng leha e le sefe sa leholimo kapa sebakeng sa letsatsi, kapa motšehare, khahlanong le mabotho a hanyetsang. The Infantry e khona ho hlahisa ntoa e feletseng, ho akarelletsa le NBC; ho sebelisa lintoa ho fumana, ho atamela le ho senya sera ka mollo le ho tsamaisa ka maoto kapa ho palamisa literaka, likoloi tse hlaselang, thepa ea ho hlasela kapa lifofane tse hlaselang.
MOS ea masea a masea a USMC a khona ho sireletsa le ho itšireletsa ka boeena le sebaka sa bohlokoa ka ho hlohlelletsa tlhaselo ea sera ka mollo, ho tsamaisa le ho loantša. Li hlaoleloa ts'ebetsong ea boetapele e hlahisang mohlabani oa mantlha ka phihlelo le ho koetlisoa ho ofisiri e sa sebetsoeng ka ho feletseng le basebeletsi bao e seng basebetsi.
Moeta-pele ea loantšang literene tsa Marines o tsamaisa liketso tsa Marines ka lihlopha, likarolo, li-squads le li-squat, ha a ntse a hokahanya le lihlopha tse phahameng le tse haufi le lihlopha tse tšehetsang.
Ka tlase ho na le Lintho tse khethehileng tsa mosebetsi oa sesole sa Marine Corps tse hlophisitsoeng tlas'a tšimo ena ea mosebetsi:
0311 - Rifleman
0312 - Riverine Assault Craft
0313 --LAV Crewman
0314 - Rigid Raiding Craft
0316 - Craft Reconnaissance Craft
0323 - Motho oa Tumelo, Parachute ea tšoanelehang
0324 - Motho oa Tlhompho, Motho ea loantšanang ea tšoanelehang
0326 - Motho oa Reconnaissance, Parachute le Dibat Diver ba tšoanelehang
0331 - Machine Gunner
0341 - Mortarman
0351 - Mohlankana oa Mohlankana
0352 - Tanka ea litlokotsebe
0369 - Moeta-pele oa Sehlopha sa Boipheliso
0372 - Mesebetsi e khethehileng ea Lesebelisoa la Marine (MarSOC) Mesebetsi ea Boiphihlelo e Bohlokoa (CSO)
Hase bohle ba Marine Corps ba khonang ho etsa mesebetsi ena ea ntoa. Bohle ba hloka boemo bo phahameng ba ho ikoetlisa 'meleng, sebete sa kelello, le litsebo tsa maqiti tse tla hlahlojoa nakong ea kampo ea bootopo, lithupelo tse tsoetseng pele, le mananeo a ho khetha le ho hlahloba. Mefuta ena ea litsebi e hloka boemo ba hao ba ho ikoetlisa ho ba ka holimo ho karolelano pele o ea Marine Corps Recruit Depot - kapa Boot Camp / Basic Training Recruit.
Hangata ho thoholetsoa e le kampo e boima ka ho fetisisa ea boot / koetliso ea mantlha ho Sesole sa United States, ho fihla ha hao holimo ho tla u thusa ho qoba kotsi, ho ithuta mosebetsi oa hau oa motheo oa Marine Corps, le ho u thusa ho finyella lipakane tsa litsebo tsa mosebetsi oa hau (haeba Infantry / RECON / tse ling).
Monyetla o tsoetseng pele litabeng tsa ntoa ea sesole ke tse ngata ka har'a Marine Corps. Tshebetso ea hau le takatso ea hau ea Basic Recruit Training li tla etsa qeto ea hore na u tla etsa'ng nakong e tlang. Mesebetsi ea maqheku ea mesebetsi ea boipheliso ke ea tlhōlisano empa e kholo ho lekaneng ho lumellana le litakatso tsa batho ba bangata ba ntoa.