Related Rule
Practice Relating to Rule 146. Reprisals against Protected Persons
Section C. Medical and religious personnel in the power of the adversary
Nigeria’s Military Manual (1994), in a part dealing with the 1949 Geneva Convention I, states that reprisals “are prohibited ‘against the … personnel … protected by the convention’ (Art. 46)”. 
Nigeria, International Humanitarian Law (IHL), Directorate of Legal Services, Nigerian Army, 1994, p. 14, § 5.
Nigeria’s Manual on the Laws of War, which states that “[i]t is prohibited to take measures of reprisal against prisoners of war as a retaliation for [a] violation of the Laws of War by the enemy”, also provides for the same protection and benefits to be granted, as a minimum, to medical personnel and military chaplains captured by the enemy. 
Nigeria, The Laws of War, by Lt. Col. L. Ode PSC, Nigerian Army, Lagos, undated, §§ 33 and 37.