army unit - a military unit that is part of an army

battalion - an army unit usually consisting of a headquarters and three or more companies

control, command - exercise authoritative control or power over; "control the budget"; "Command the military forces"

organize, form, organise - create (as an entity); "social groups form everywhere"; "They formed a company"

assign, delegate, designate, depute - give an assignment to (a person) to a post, or assign a task to (a person)