Related Rule
Russian Federation
Practice Relating to Rule 110. Treatment and Care of the Wounded, Sick and Shipwrecked
Section B. Distinction between the wounded and the sick
The Russian Federation’s Military Manual (1990) provides:
Military commanders may appeal to the charity of the local population to voluntarily collect and care for the wounded and sick. The military authorities must permit the inhabitants and relief societies, even in invaded or occupied areas, spontaneously to collect and care for wounded or sick of whatever nationality. 
Russian Federation, Instructions on the Application of the Rules of International Humanitarian Law by the Armed Forces of the USSR, Appendix to Order of the USSR Defence Minister No. 75, 1990, § 15.
[emphasis added]
The Russian Federation’s Regulations on the Application of IHL (2001) states: “There shall be no distinction among [the wounded, sick and shipwrecked] founded on any grounds other than medical ones.” 
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, § 47; see also § 13 (responsibilities of military medical personnel).
With regard to internal armed conflict, the Regulations states: “In performance of their duties, medical personnel may not be required to give priority to any person except on medical grounds.” 
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, § 83.