Related Rule
Australia
Practice Relating to Rule 6. Civilians’ Loss of Protection from Attack
Section C. Situations of doubt as to the character of a person
Australia’s Defence Force Manual (1994) states: “In cases of doubt about civilian status, the benefit of the doubt is given to the person concerned.” 
Australia, Manual on Law of Armed Conflict, Australian Defence Force Publication, Operations Series, ADFP 37 – Interim Edition, 1994, § 914.
Australia’s LOAC Manual (2006) states: “In cases of doubt about civilian status, the benefit of the doubt must be given to the person concerned.” 
Australia, The Manual of the Law of Armed Conflict, Australian Defence Doctrine Publication 06.4, Australian Defence Headquarters, 11 May 2006, § 5.33.
The LOAC Manual (2006) replaces both the Defence Force Manual (1994) and the Commanders’ Guide (1994).