Winfield
Bill Herron
Jeb Rickards
Young Sam
Larry Price
Ashley Carstairs
David Morris
Smiley
Al
Shanley
Danny Harland
Lionel
Derek (voice)
String
Butch "Shrimp" Malone
Tommy
Billy Doran
Tommy Gargan
Paul Enley Kyng
Flip
George 'Tough' McCarty
Wilbur "Coney" Cohen
Sneezer
Child (uncredited)
Derek (voice)
Joe
Derek (voice)
Harold 'Skinny' Peters
Billy Freeman
Merton Tollivar
Self (from Dangerous Years [1947]) (archive footage)
Hank
Etienne
Dr. Hayes
Benjie Galt
Judd Tewilliger
Dexter Franklin
Raymond Pringle
Sam Hooper
Jeb
Matt Davis
Leo Emerson
Andy
Toby Bonham
Peter Kent
Self
Johnny Tevis (uncredited)
Mickey Moriarty
Swanson
Bob
Michael 'Micky' Clark
Johnny Smith
'Blackie' - as a Boy
Peter Bulganov
Ens. Jack Wheelwright
Self
Eddie Rickenbacker as a boy
Earl of Kent
Victor as a boy
Benny
Ira Gershwin as a Boy
Schoolboy
Billy Phillips
Dr. Jim Belfield
Lt. Jeremiah Sullivan
Dave King
Billy Bingham
David Engstrom
Frank
Senior Cadet Pete Bennett
Homesteader's Son (uncredited)
Bill Webber
Peter Grey
Priest
Andy Hill
Steve Harris
Matt Brand
Jack Evans
Wags
Roadie (voice)
Jackie Blake
Tommy Palmer
Ensign Janoski
Andy Miller
Kid Comet (voice)
Johnny Pearson
Dave
Joe Skinner
Frank Locke
Schuyler 'Sky' Young
Harlan Thomas
Donald
Danny Miles
Chet Sterling
Cpl. Ben Canfield
Johnny Martin
Davey Gillis
Lt. Mathew Perry
Rok
Joe Hannon
Danny
Yank
Phil Morrisey
Lieutenant Jeremiah Sullivan
Ashley Carstairs
Dal Royal
Kid Comet
Danny Madikoff
Pac-Junior (voice)
Ernie
Bob Jessup
Robert Charles
Don Lindon
Damon Ring, Jr.