Related Rule
Russian Federation
Practice Relating to Rule 25. Medical Personnel
Section B. Equipment of medical personnel with light individual weapons
The Russian Federation’s Regulations on the Application of IHL (2001) states: “Military medical personnel may have individual small arms for their own defence and protection of the wounded and sick in their charge.” 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 1.
The Regulations further states:
Medical transports are allowed to carry individual small arms and ammunition taken from the transported wounded (sick) and shipwrecked as well as individual small arms of the transported military medical personnel. 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 152.