Home / Reference Books / Provisional Drill and Service Regulations for Field Artillery (6-inch Howitzer) – 1917 Provisional Drill and Service Regulations for Field Artillery (6-inch Howitzer) – 1917$25.00 1917. Measures approximately 4-5/8″ X 6-1/4″. 185 pages, very good condition with minor wear. Provisional Drill and Service Regulations for Field Artillery (6-inch Howitzer) - 1917 quantity Add to cart Item Number: 44895 Category: Reference Books