Related Rule
Practice Relating to Rule 5. Definition of Civilians
Poland’s Procedures Governing the Interment of Soldiers Killed in Action (2009) states in the section on definitions that civilians are “[p]ersons who are not members of the armed forces”. 
Poland, Norma Obronna NO-02-A053:2004, Działania wojenne Procedury pochówku poległych i zmarłych, enacted by decision No. 134/MON related to the Approval and Enforcement of Regulatory Instruments in Respect of State Defence and Security, 21 April 2009, published in the Official Gazette of the Ministry of National Defence, No. 8, Item 99, April 2009, Section 1.3.5.