Kammala jumla mai zuwa: Welborn ya yi aiki a wasu rikice-rikice guda uku:
Philippine-American War, Boxer Rebellion, da kuma yakin duniya na, daga bisani ya tashi zuwa matsayin colonel. Ya yi aiki a matsayin Jami'in Tactical a West Point, 1904<unk>1906. Bayan an gabatar da tanki a fagen yaƙi a Yaƙin Duniya na I, an ba Welborn cikakken bayani don ya zama shugaban farko na Sabis ɗin Tankin Sojojin Amurka, wanda ya sami lambar yabo ta Musamman. Ya yi ritaya daga aiki a 1932.