A Salvation Army Corps is a church and place of worship in The Salvation Army. In keeping with Salvationist convention in using military terminology, Corps are sometimes casually known as barracks. Many Corps are additionally called Temples or Citadels, such as Openshaw Citadel. Corps are usually led by an officer or married officer couple, who fulfil the role of a Pastor in other denominations. Officers in these positions are known as "Corps Officers" or CO's, and are generally Lieutenants, Captains or Majors.