Related Rule
Cameroon
Practice Relating to Rule 28. Medical Units
Cameroon’s Disciplinary Regulations (1975) provides that, under the laws and customs of war, each soldier must respect medical units and establishments, as well as places where the wounded and sick, civilian or military, are collected. 
Cameroon, Règlement de discipline dans les Forces Armées, Décret No. 75/700, 6 November 1975, Article 31.
The regulations further provide that the protection of medical units and establishments, as well as places where the wounded and sick, civilian or military, are collected, is contingent on their not being used for military purposes. 
Cameroon, Règlement de discipline dans les Forces Armées, Décret No. 75/700, 6 November 1975, Article 31.
Cameroon’s Instructor’s Manual (2006) states under the heading “Enemy Military Objects”:
Medical military units and their material must not be used for any other purposes while they are still needed for the care of the wounded and sick.
Captured mobile medical units remain reserved for the wounded, sick and shipwrecked. 
Cameroon, Droit des conflits armés et droit international humanitaire, Manuel de l’instructeur en vigueur dans les forces de défense, Ministère de la Défense, Présidence de la République, Etat-major des Armées, 2006, p. 123, § 403; see also p. 165, § 463.
Cameroon’s Disciplinary Regulations (2007) states:
Article 31: Humanitarian rules
Every soldier must:
- respect medical units, establishments and transports, hospital zones and localities, places where the wounded and sick, civilian or military, are collected, the emblems of the Red Cross, the Red Crescent and national Red Cross and Red Crescent societies, which are protective signs as such, as well as medical personnel;
For the application of the rules addressed in the two preceding paragraphs,
it is evidently necessary that the structures and buildings are not being used for military purposes;
These rules apply to the extent possible to operations undertaken by airplanes and navy ships against targets on land or at sea. 
Cameroon, Règlement de discipline générale dans les forces de défense, Décret N° 2007/199, Président de la République, 7 July 2007, Article 31.