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 … Supplement no.3 to Army/Air Operations Pamphlet. no.4. (Chapter 3) Carriage of Artillery. Equipment by Air. Section 5, Pack Howitzer M1A1 on carriage, M8 in Dakota …