Pamphlet no. 39 B. Combined Operatios. Royal Army Medical Corps. (Based on 1942 organization of Field Medical Units). WO 7853 - Engeland Voorschrift 26/GS Publications/1020 Pamphlet no. 39 B. Combined Operations. Royal Army Medical Corps. WO 7853 - Engeland Voroschrift 26/GS Publications/1020 For a mobile neurosurgical unit