Dick Purcell

as Spike Nelson

as Captain America / Grant Gardner

as Milt Holmes

as Johnny Smith

as Dave

as Lancelot 'Gadget' Blaine

as Duke Springer

as Randy Brooks

as Andy Adams

as Tank Instructor

as Police Lt. William 'Bill' Decker

as Edward Clarkk

as Scarf Lennin

as Norm Thompson

as Joe Dawson

as Ralph Andrews

as Red Harris

as Bob Fuller

as Cliff Halliday

as Wicks

as Bill Gratton

as James 'Mac' McCarthy

as Lieut. 'Stichy' Payne

as Mackley Q. Greene

as Pink

as Dick Cartwright

as Alexander

as Agent Melvin Pierce

as Terry Murphy

as John Jones

as Steve Lanahan

as Dave Miller

as T.P. 'Tap' Keenan

as Dick Purcell

as Terry Walsh

as Tex Boyden (archive footage) (uncredited)

as 'Red' Murphy

as Keiffer

as Vince Morrell

as Rick Fulton

as Creel

as Tex Boyden

as Lance O'Leary

as Percy 'Slats' Harrington

as Bill Kellogg

as Jim Faber

as Ace Scanlon

as Bill Foster

as "Bull" Regan

as David 'Harp' Santell

as George Mayhew

as Paul Wayne

as Benefit Show Guest (archive footage) (uncredited)

as Joe Taylor

as Trapped Draegerman (uncredited)

as Mel Lynch

as Jimmy Carmody

as Rusty Gibbs

as Gabby Dugan

as George Chester

as Ed Slayden

as Nick DeLargo

as Louie

as Crandal

as Ed Driscoll

as Marty

as Wally Calhoun

as Dr. Randolph Jenkins (as Richard Purcell)

as Bert (uncredited)

as Lead Marine on Ship (uncredited)

as Skip McHenry

as Radio Announcer (uncredited)

as Smiley (as Dick Purcell)

as Undetermined Secondary Role (uncredited)