Supplement no.3. to Army/Air Operations Pamphlet no.4 (chapter 3). Army/Air Operations Pamphlet. Carriage of Vehicles bij Air. Section 4, Q.F. 25 Ponder. Mark 2, Gun … Anti-Aircraft Training Instruction. Serial IX. Part I. Heavy Anti-Aircraft - Engeland Voorschrift Anti-Aircraft Training Instruction. Serial X. Part IV. "Z" Anti-Archraft - Engeland Voorschrift Anti-Aircraft Training Instruction. Serial XI. Part IV. Rocket Anti-Aircraft - Engeland Voorschrift Supplement no.3 to Army/Air Operations Pamphlet no.4. (chapter 3). Carriage of Artillery. Equipment by air. Section 3, Q.F. 3.7 Howitzer, Mark 1 on carriages 3-7 …