Règle correspondante
Luxembourg
Practice Related to Rule 95. Forced Labour
Section B. Compelling persons to serve in the forces of a hostile power
Luxembourg’s Law on the Repression of War Crimes (1947) provides that “any enlistment by the enemy (or its agents) [of foreign nationals] in either the regular army, police units or military or paramilitary organizations” is a war crime. 
Luxembourg, Law on the Repression of War Crimes, 1947, Article 2(1).
Under Luxembourg’s Law on the Punishment of Grave Breaches (1985), “compelling a person protected by [the 1949 Geneva Convention III] and [the 1949 Geneva Convention IV] to serve in the armed forces of the enemy power” is a grave breach of the 1949 Geneva Conventions. 
Luxembourg, Law on the Punishment of Grave Breaches, 1985, Article 1(4).