I believe you are thinking of the actor Gary Lockwood.
Gary Collins co-starred in a TV series “The Wackest Ship in the Army.” His co-star, who I though did a fine job in the series was Jack Warden.
Of course. Do’h! I should’ve remembered that. Thanks, MM.
Whoa..! I am old enough to remember the TV series, and also the reruns of the Jack Lemmon movie of the same name. Man, I haven't thought about 'The Wackiest Ship in the Army' in over 35 years. Yikes, what a blast from the past.