A military chaplain ministers to military personnel and, in most cases, their families and civilians working for the military. In some cases, they will also work with local civilians within a military
A Catholic chaplain celebrating mass in an Austrian military hospital in 1916
Fr. Thomas Mooney, a Catholic chaplain of the 69th Infantry Regiment of the New York State Militia, at a mass with fellow soldiers at Fort Corcoran, Arlington Heights, Virginia, 1861