The Doctor, Jamie and Zoe arrive on an unnamed planet. At first believing themselves in the midst of World War I, they realise it to be one of many War Zones overseen by the War Lords, who have kidnapped large numbers of human soldiers to form the greatest army the universe has ever seen. At the helm of this plot is the War Chief, another renegade Time Lord like the Doctor. The creeping realisation sets in that the Doctor cannot solve this problem alone, and that his days of wandering may be at an end...
Patrick Troughton
as The Doctor
Frazer Hines
as Jamie McCrimmon
Wendy Padbury
as Zoe Heriot
David Savile
as Lt Carstairs
Jane Sherwin
as Lady Jennifer Buckingham
Noel Coleman
as General Smythe
Richard Steele
as Commandant Gorton
Terence Bayler
as Major Barrington
Hubert Rees
as Captain Ransom
David Valla
as Lieutenant Crane
Esmond Webb
as Sgt Major Burns
Brian Forster
as Sergeant Willis
