Royal Engineers. Supplementary Pocket Book. no. 4. WO 7151 Royal Engineers. Supplementary Pocket Book. no. 4. WO 7151 Pamphlet no. 35 A. Combined Operations. Royal Engineers. (Other than transportation Units). WO 7348 - Engeland Voorschrift 26/GS/Publcations/1158 Training Memorandum. no. 19. Royal Engineers. WO 7064