- The arrangement of the current United States Military organization has remained unchanged for the most part since 1947. There are five branches in the United States Military--Army, Navy, Air Force, Marines and Coast Guard--and three different classifications--enlisted, warrant officers and commissioned officers.
- Enlisted personnel are specialists who have volunteered to join the military during times of peace. As they move through the ranks, they may become noncommissioned officers who, under the supervision of a commissioned officer, command troops. A warrant officer is a very specialized category of military personnel.
- The military ranking system serves as a means to guide a soldier's advancement through the ranks based on seniority and achievement.
- Each of the five military branches have their own titles, but they all follow the same pay scale. It starts with E-1 for enlisted soldiers and culminates at E-9. For warrant officers, the ranking system starts at W-1 and ceases at W-5, and for commissioned officers, it's O-1 through O-10.
- While the system is uniform among the five branches of the United States Military in regards to pay scale, insignias and titles differ from branch to branch.











