Re: [R] Selecting columns of a table (not consecutive) >I have a table with 10 columns and many rows. >I want to select the 3rd,4th and 10th column. >problem.
There are three Military Departments within the Department of Defense: the Department of the Army, which the United States Army is organized within. the Department of the Navy, which the United States Navy and the United States Marine Corps are organized within.
Structure & Branches. The US military has five branches: the Army, Navy, Air Force, Marines, and Coast Guard. As shown in the graphic below, the Army, Navy, Air Force, and Marines are housed under the Department of Defense (DOD).The DOD is headed by The Secretary of Defense, a civilian appointed by the President.he US military has five branches: the Army, Navy, Air Force, Marines, and Coast Guard.