Related Rule
Australia
Practice Relating to Rule 65. Perfidy
Section I. Simulation of civilian status
Australia’s Commanders’ Guide (1994), in a section entitled “Perfidy”, states: “Combatants wearing civilian clothing in battle … violate LOAC and diminish the enemy’s ability to … distinguish civilians.” 
Australia, Law of Armed Conflict, Commanders’ Guide, Australian Defence Force Publication, Operations Series, ADFP 37 Supplement 1 – Interim Edition, 7 March 1994, § 507.
The manual adds: “Acts which constitute perfidy include feigning of … civilian, non-combatant status.” 
Australia, Law of Armed Conflict, Commanders’ Guide, Australian Defence Force Publication, Operations Series, ADFP 37 Supplement 1 – Interim Edition, 7 March 1994, § 826(c) (naval warfare) and § 902(c) (land warfare).
Australia’s Defence Force Manual (1994) states: “Acts which constitute perfidy include feigning of … civilian or noncombatant status.” 
Australia, Manual on Law of Armed Conflict, Australian Defence Force Publication, Operations Series, ADFP 37 – Interim Edition, 1994, § 703(c) (land warfare); see also §§ 635(c) and 636(a) (naval warfare).
Australia’s LOAC Manual (2006) states: “Acts which constitute perfidy include feigning of … civilian or non-combatant status”. 
Australia, The Manual of the Law of Armed Conflict, Australian Defence Doctrine Publication 06.4, Australian Defence Headquarters, 11 May 2006, § 7.3.
The LOAC Manual (2006) replaces both the Defence Force Manual (1994) and the Commanders’ Guide (1994).