Introduction -- 1. The attack and defense in modern war -- 2. General principles of field fortification ; General organization of a defensive position -- 3. General organization of a defensive position (continued) ; Field fortification attack -- 4. Location of a defensive position -- 5. Special features of defensive organization ; Summary of defensive organization -- 6. Trenches -- 7. Detailed conduct of trench work -- 8. Trench accessories ; Drainage -- 9. Revetments -- 10. Obstacles ; Construction of fixed entanglements -- 11. Obstacles (Continued) ; Construction of portable entanglements ; Wire entanglement drills -- 12. Shelter -- 13. Machine gun emplacements -- 14. Camouflage -- 15. Camouflage (Continued) -- Appendix A. Suggestions for practical work in field fortification -- Appendix B. Weights and loads of engineer materials.