Theater (warfare)

This protection may consist of fortresses, or important natural obstacles presented by the country, or even in its being separated by a considerable distance from the rest of the space embraced in the war.

Such a portion is not a mere piece of the whole, but a small whole complete in itself; and consequently it is more or less in such a condition that changes which take place at other points in the seat of war have only an indirect and no direct influence upon it.

In peacetime, lacking the urgencies of a strategic direction, fronts were transformed into military regions (districts) responsible for an assigned section of operations.

Plans appear to have existed to form a Northwestern TVD headquarters on the basis of the Staff of the Leningrad Military District.

[9] An official military encyclopedia published after the Fall of the Soviet Union stated, said Harrison, that the Soviet Pacific Fleet, an air army, and an air defence corps were also operationally subordinated to the new formation; and that the high command "coordinated" with the armies of Vietnam, Laos, Cambodia, and Mongolia.

Unified Combatant Command of the United States
Chart 12 - typical organization of a theater of operations as envisaged by War Department Doctrine, 1940