相关规则
Hungary
Practice Relating to Rule 106. Conditions for Prisoner-of-War Status
Section C. Situations where combatants cannot distinguish themselves
According to Hungary’s Military Manual (1992), combatants must carry their arms openly “at least during every military engagement [and] as long as they are visible to the enemy while engaged in a military deployment”. 
Hungary, A Hadijog, Jegyzet a Katonai, Föiskolák Hallgatói Részére, Magyar Honvédség Szolnoki Repülötiszti Föiskola, 1992, p. 17.
The manual further states: “Inhabitants of occupied territory may organize resistance movements. Members are combatants if they meet the requirements of armed forces.” 
Hungary, A Hadijog, Jegyzet a Katonai, Föiskolák Hallgatói Részére, Magyar Honvédség Szolnoki Repülötiszti Föiskola, 1992, p. 103.