The ARMY is divided into four sub-branches the regular army- special operations- Army national guard - and army reserves at least that's how the U.S. ARMY works
The four types of command relationships used by Army commanders when task organizing are Combatant Command (COCOM), Operational Control (OPCON), Tactical Control (TACON), and Support.
Your question lacks specificity. Place your question into context. There are more than four types of searches.
OPCON SSD answer
OPCON SSD answer
OPCON SSD answer
OPCON SSD answer
OPCON SSD answer
OPCON SSD answer
OPCON SSD answer
OPCON SSD answer
The four types of command relationships army commanders use are:Administrative control (ADCON)Operational control (OPCON)Tactical control (TACON)Combatant command (COCOM)
Four years Regular Army, four years Army National Guard.