The US Field Manual (1956) states that parties to the conflict “shall further ensure that the dead are … interred, if possible according to the rites of the religion to which they belonged”.
United States, Field Manual 27-10, The Law of Land Warfare, US Department of the Army, 18 July 1956, as modified by Change No. 1, 15 July 1976, § 218; see also Operational Law Handbook (1993), p. Q-185.