Stanley Baker as Major Harry Grigsby

Alex Cord as Kip Thompson

Honor Blackman as Mrs. Katherine Whiteley

Richard Attenborough as General Charles Whiteley

Rafer Johnson as Joe Jackson

Andrew Keir as Gordon Mackenzie

Ray Brooks as Lt. David Coulson

Julian Glover as Andy Royale

John Thaw as Terry Mitchell

Philip Latham as Adams

Neil Wilson as Wilson

Gerald Sim as Dr. Griffiths

A. J. Brown as Governor

Pamela Stanley as Governor's Wife

Kenji Takaki as Te Ching

Paul Dawkins as Commissioner Doyle