Definitions for war zone
Random House Webster's College Dictionary
(during wartime) a combat area, esp. at sea, where neutral ships are subject to attack the same as enemy vessels.
a combat zone where military operations are coordinated (especially a designated area in international waters where the rights of neutrals are not respected by nations at war)
A region where war is ongoing.
A region where structures are damaged or in disarray, appearing similar to the effects of a military conflict.
By extension, any area with a significant display of damage or disarray.