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.
Former executive and Cabinet-level departments. 1  Department of War (1789â1947), headed by the Secretary of War: renamed Department of the Army by the National Security Act of 1947. 2  Department of the Navy (1798â1949), headed by the Secretary of the Navy: became a military department within the Department of Defense.