This gentle World War II-era comedy, which chronicles the private war of two military dentists who invade France armed with a couple of pistols and a bag of grenades, is based on one of those true stories so eccentrically preposterous that it could only have happened to Englishmen. 1942, Aldershot: Middle-aged Sgt. Peter King (Kenneth Cranham) and youthful Pvt. Leslie Cuthbertson (Leo Bill), both attached to the Royal Army Dental Corps, share a deep frustration with the terms of their military service. King consistently put his career ahead of marriage and family life, only to find himself alone and passed over for promotion because of his age; he seems doomed to sit...