In Ronald Neame's Tunes of Glory, the incomparable Alec Guinness inhabits the role of Jock Sinclair-a whiskey drinking, up-by-the-bootstraps commanding officer of a peacetime Scottish battalion. When Basil Barrow (John Mills)-an educated, by-the-book scion of a traditionally military family-enters the scene as Sinclair's replacement, the two men become locked in a fierce battle for control of the battalion and the hearts and minds of its men.