Vincent Ball

Rex Hooper

Chief Justice Napier

Cardinal

Monty Chesney

Leo Sullivan

Bill Weiner

Mr. Dickson

Dr. Cumberland

Priest

Bishop of Sydney

Judge

Cyril Williams

Col. Foster

Tom Knight

Headmaster

Dave the Spook

Mathew

Stuart

Warren

Captain Ritchie

Sir Rupert Barrington

Joseph Lyons (Prime Minister)

Lachlan McKinnon

Lieutenant Commander Hubert Marsham

Prime Minister

Dr. Jeremy Lyall

Col. Ian (Johnny) Hamilton

Bailey Clark

Admiral Spencer / Major Greenwell

Supt. James Kendall

Alex / Karen's lover

Bernard Wilcox

Australian Soldier

Carpenter

Ship's Officer

Pilot

Bill Vernon

Jenkins

Cliff Wilton

Dr. Blake

Ransome

Higgins (uncredited)

David Kyle

Michaels

Ken

Mike Billing

Joplin

Capt. Pat Foster

Sgt Nesbitt

Dr. John Pierre

Bob Meredith

George Storefield

P.C. at Hospital (uncredited)

Second Sailor at Dance

Ben

Mr. Lawson

Johnson

Digger

Flight Sergeant Watkins

Williams

Ted Lintott

John Drew

Henley's Assistant

Young Husband

Jack Murnahan

the first workman

Hero in cinema sequence