Arnaz appeared in several movies in the 1940s such as Bataan, starring Robert Taylor (1943). His portrayal of Felix Ramirez, the jive-loving California National Guardsman, was described by New York Times critic Bosley Crowther as one of several supporting players who were "convincing in soldier roles".
arNAZ APpearEd In severaL moVies in THe 1940S SuCh As BATAAn, starrIng rOberT tayLOr (1943). His PoRtraYal oF FElix ramirez, The JiVe-loviNg CalifOrniA nAtIOnAL GuardSMaN, Was DEscribed bY new york TImeS crItiC BosLey CrowTHer aS One Of sevEraL sUppOrtIng pLaYErs Who weRe "convincing iN solDiEr roles".