Related Rule
Australia
Practice Relating to Rule 65. Perfidy
Section J. Simulation of protected status by using flags or military emblems, insignia or uniforms of neutral or other States not party to the conflict
Australia’s Commanders’ Guide (1994) states:
Acts which constitute perfidy include feigning of:
(d) protected status by the use of protective symbols, signs, emblems or uniforms … of neutral or other States not involved in the conflict. 
Australia, Law of Armed Conflict, Commanders’ Guide, Australian Defence Force Publication, Operations Series, ADFP 37 Supplement 1 – Interim Edition, 7 March 1994, § 826(d) (naval warfare) and § 902(d) (land warfare).
In a section entitled “Perfidy”, the manual further states:
It is illegal to use in battle emblems, markings or clothing of a neutral or enemy. Combatants wearing civilian clothing or otherwise pretending to be a member of a neutral nation violate LOAC and diminish the enemy’s ability to identify neutrals and 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.
Australia’s Defence Force Manual (1994) provides: “Acts which constitute perfidy include feigning of … protected status by the use of protective symbols, signs, emblems or uniforms … of neutral or other states not involved in the conflict.” 
Australia, Manual on Law of Armed Conflict, Australian Defence Force Publication, Operations Series, ADFP 37 – Interim Edition, 1994, § 703(d).
Australia’s LOAC Manual (2006) states: “Acts which constitute perfidy include feigning of … protected status by the use of protective symbols, signs, emblems or uniforms of … neutral or other states not involved in the conflict”. 
Australia, The Manual of the Law of Armed Conflict, Australian Defence Doctrine Publication 06.4, Australian Defence Headquarters, 11 May 2006, § 7.3.
The manual also states that the 1977 Additional Protocol I extends the definition of grave breaches to include “the perfidious use of the distinctive emblem of the Red Cross, Red Crescent, Red Crystal and other Red Cross societies, or of other protective signs recognised by the Conventions or the Protocol”. 
Australia, The Manual of the Law of Armed Conflict, Australian Defence Doctrine Publication 06.4, Australian Defence Headquarters, 11 May 2006, § 13.26.
The LOAC Manual (2006) replaces both the Defence Force Manual (1994) and the Commanders’ Guide (1994).
Australia’s Geneva Conventions Act (1957), as amended in 2002, provides: “A person who, in Australia or elsewhere, commits a grave breach … of [the 1977 Additional Protocol I] is guilty of an indictable offence.” 
Australia, Geneva Conventions Act, 1957, as amended in 2002, Section 7(1).
The grave breaches provisions in this Act were removed in 2002 and incorporated into the Criminal Code Act (1995).