Don't Kill Your Friends (1943)
Huntz Hall = Ensign Dilbert (uncredited)
"In this documentary short training film, Navy pilots are instructed in aerial gunnery. The example of a careless and inattentive pilot named Dilbert is used to depict the many ways in which pilots can wreak havoc during gunnery training. Dilbert manages to kill colleagues and civilians alike with his forgetfulness, his thoughtlessness, and his cavalier attitude. Pilots are warned not to be a Dilbert."
http://www.imdb.com/title/tt1615446/ It's no wonder this guy seemed so familiar. He was in 116 films.
Huntz Hall (1919–1999)
http://www.imdb.com/name/nm0355653/