 Ramba uchinyora ndima iyi - Muna 1957, akapiwa basa remakore maviri pamuzinda weCIA muLangley, Virginia, uye gare gare kuPakistan nePhilippines. Muna 1966 akagadzwa kuva Senior Province Advisor muQuảng Trị Province, muRepublic of Vietnam, ndiye chete mukuru weCIA akabata chinzvimbo chakadai, kwaakashanda kusvika muzhizha ra1968. Muna Ndira, 1968, panguva yeCommunist Tet Offensive, Brewer akabatsira mukuyedza kwakabatanidzwa kukunda kurwisa kukuru kuQuảng Trị Guta uye nzvimbo dzevarwi dzeSouth Vietnamese neNorth Vietnamese Peoples Army yeVietnam PAVN. Kurwiswa kwacho kwaiva nechinangwa chokutora uye kubata guta racho uye kuwana simba reruwa, uye pamwe chete nokuedza kutora uye kubata guta reHuế, dunhu riri kumaodzanyemba kweQuảng Trị Province, raive rimwe rechinangwa chikuru cheNorth mukumhanyisa kurwisa kwayo. Achitevera basa rake muVietnam, Brewer akapedza rwendo rwekuchamhembe kweThailand, achibatsira hurumende yeThailand mukuedza kwayo kukunda kupandukira kweCommunist, uye kubvisa kugadzirwa kweopium munzvimbo yeGolden Triangle yeBurma Myanmar, Laos neThailand. Akasiya basa muhurumende muna 1973. 