Why Is The Department Of Defense A Pentagon?

Why Is The Department Of Defense A Pentagon? The site originally chosen was Arlington Farms, which had a roughly pentagonal shape, so the building was planned accordingly as an irregular pentagon. Freed of the constraints of the asymmetric Arlington Farms site, it was modified into a regular pentagon, which resembled the fortifications of the gunpowder

What Departments Fall Under Department Of Defense?

What Departments Fall Under Department Of Defense? The Department of Defense is responsible for providing the military forces needed to deter war and protect the security of our country. The major elements of these forces are the Army, Navy, Marine Corps, and Air Force, consisting of about 1.3 million men and women on active duty.