CHAPTER 1

. The ordnance problem 21

2. Gun production 38 3. Mobile field artillery 56 4. Railway artillery 91 5. Explosives, propellants, and artillery ammunition 103 6. Sights and fire-control apparatus 135 7. Motorized artillery 148 8. Tanks 154 9. Machine guns 158 10. Service rifles 177 11. Pistols and revolvers 187 12. Small-arms ammunition 191 13. Trench-warfare material 200 14. Miscellaneous ordnance equipment 221

## BOOK II--THE AIR SERVICE.

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