An official website of the United States Government

Here's how you know

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Tank Corps Chief

Army Brig. Gen. Samuel Dickerson Rockenbach, chief of the Tank Corps, sits for a photo in Chaumont, France, Sept. 5, 1918. Library of Congress photo

The Department of Defense provides the military forces needed to deter war and ensure our nation's security.

Photos