Related Rule
Practice Relating to Rule 65. Perfidy
At the CDDH, Egypt, commenting on Article 44 of the 1977 Additional Protocol I, stated that the right of the guerrilla fighter to be considered as a lawful combatant “did not release regular combatants from their obligation to wear their uniform during military operations, failing which they would be committing an act of perfidy”. 
Egypt, Statement at the CDDH, Official Records, Vol. XV, CDDH/III/SR.55, 22 April 1977, p. 160, § 28.