Though the Geneva Conventions do not state whether chaplains may bear arms, they specify (Protocol I, 8 June 1977, Art 43.2) that chaplains are noncombatants. In recent years both the UK and US have required chaplains, but not medical personnel, to be unarmed. Other nations, notably Norway, Denmark and Sweden, make it an issue of individual conscience. Captured chaplains are not considered Prisoners of War (Third Convention, 12 August 1949, Chapter IV Art 33) and must be returned to their home nation unless retained to minister to prisoners of war.
http://en.wikipedia.org/wiki/Chaplain#Military