George O'Brien

as Self (archive footage) (uncredited)

as Maj. Mac Allshard

as Capt. Sam Collingwood

as Single Voice of the Dead Servicemen (voice)

as Captain Jack Steele

as Daniel Boone

as Cmdr. Robert 'Bob' Kingsley

as Travis / Japheth

as The Man (Anses)

as Dan O'Malley

as Adam Smith

as Tom O'Day

as Davy Brandon