skin area
n.— «It was more than 40 miles to the destroyed zone by ruck march, a forced troop march carrying gear and armaments which can weigh in excess of 100 pounds. The term used to describe the region of the country is the “skin area” on the Afghanistan-Pakistan border.» —“War makes soldiers take stock of their lives” by Jason B. Hogan in San Antonio College Ranger (Texas) Apr. 4, 2008. (source: Double-Tongued Dictionary)