Pat O'Brien
— Francis William 'Frank' / 'Cav' Cavanaugh
Ruth Warrick
— Florence Ayres Cavanaugh
Robert Ryan
— Father Timothy 'Tim' Donovan
Leon Ames
— Robert 'Bob' Stewart
Russell Wade
— Private Manning
Bruce Edwards
— Lieutenant Jones
Richard Martin
— David 'Davie' Cavanaugh
Barbara Hale
— Sarah Cavanaugh
Joseph Crehan
— Judge
Milton Kibbee
— Mr. Watkins