James Gregory (born December 23, 1911-died September 16, 2002) played the part of Lieutenant General Robert "Iron Guts" Kelly in the Season 3 episode of the CBS-TV series M*A*S*H titled "Iron Guts Kelly". He is perhaps best known for his role as Inspector Luger on the long-running ABC-TV sitcom series Barney Miller, which he played for the duration of the run of the series, 1975-82.