Does this help?
http://www.imdb.com/title/tt0058777/fullcredits
Stanley Baker .... Lt. John Chard
Jack Hawkins .... Rev. Otto Witt
Ulla Jacobsson .... Margareta Witt
James Booth .... Pvt. Henry Hook
Michael Caine .... Lt. Gonville Bromhead
Nigel Green .... Colour Sgt. Frank Bourne
Ivor Emmanuel .... Pvt. Owen
Paul Daneman .... Sgt. Robert Maxfield
Glynn Edwards .... Cpl. William Allen
Neil McCarthy .... Pvt. John Thomas
David Kernan .... Pvt. Fred Hitch
Gary Bond .... Pvt. Thomas Cole
Peter Gill .... Pvt. John (612) Williams
Tom Gerrard .... Lance Corporal
Patrick Magee .... Surgeon Maj. James Henry Reynolds
Richard Davies .... Pvt. William (593) Jones
Denys Graham .... Pvt. Robert (716) Jones
Dafydd Havard .... Gunner Howarth
Dickie Owen .... Cpl. Frederic Schiess, NNC
Larry Taylor .... Hughes
Joe Powell .... Sgt. Joseph Windridge
John Sullivan .... Capt. Stephenson, Durnford's Horse
Harvey Hall .... Sick man
Gert Van den Bergh .... Lt. Josef Adendorff, NNC
Dennis Folbigge .... Commissary James Langley Dalton
Kerry Jordan .... Company cook
Ronald Hill .... Bugler
Chief Mangosuthu Buthelezi .... King Cetshwayo kaMpande (as Chief Buthelezi)
Daniel Tshabalala .... Jacob
Ephraim Mbhele .... Red Garters
Simon Sabela .... Zulu dance leader