War zone

A war zone was a point in space-time in which a war or an armed conflict was occurring.

Each of the eleven war zones in the War Game represented a different Earth conflict. Among them were the Greek Zone, the Roman Zone, the 30 Years War Zone, the English Civil War Zone, the Peninsular War Zone, the American Civil War Zone, the Mexican Civil War Zone, the Crimean War Zone, the Boer War Zone, the Russo-Japanese War Zone and the 1917 War Zone, referring to the World War I conflict. The Second Doctor and his companions moved from a time zone to another one passing through a mist. (TV: The War Games)

The Twelfth Doctor went to a war zone of the Dalek-Movellan War as a part of his plan to defeat the sentient oil. (TV: The Pilot)