 Nyorai kupfuurira kweiyi ndima - Smith akaendeswa kunzvimbo yake yokutanga kuRepublic of Vietnam ne1st Marine Division kubva musi wa7 October 1967 kusvika musi wa25 October 1968. Munguva iyi Lt. Smith akashanda semutungamiri weboka remauto 4 mwedzi uye mutungamiri wekambani 9 mwedzi muAlpha Co, 1st Battalion, 1st Marines, achiona kurwisana muHue, Khe Sanh, Rockpile, Con Thien, Dodge City uye kumaodzanyemba kweDa Nang. Akapiwa menduru yeSilver Star nokuda kwezviito zvake mukati meTet Offensive. Akapihwa imwe Silver Star yezviito pachikomo 689 paKheSanh kutanga kwaJuly. Basa rake rinotevera raive mu5th Marine Division kuCamp Pendleton, California kwaakashanda mu a href3rd20Battalion2028th20Marines328a semutungamiriri wePlatoon, Company Commander uye semubatsiri wenguva pfupi weGeneral Ross Dwyer. Muna November 1969, Lt. Smith akatumirwa kuchikoro chemutauro weVietnamese chegore rimwe chete muArlington, Virginia. Mukupera kwa1970, akadzokera kuCamp Pendleton kunoshanda paInterrogation Team kwemwedzi mina uye akabva apihwa basa ku a href2nd20Battalion2C205th20Marines 25a kusvikira atumirwa kuJohn F. Kennedy Chikoro cheHondo Yakakosha kuFt. Bragg, North Carolina. Kaputeni Smith akadzokera kuVietnam muna November 1971 nokuda kwebasa neMarine Advisory Unit. Akanga ari navaMarines vokuVietnam mukati meEaster Offensive uye Counter Offensive ya1972. 