10. =Effects of Barometric Pressure, Temperature, Wind, and Light= 27 11. =Need for Collective Fire= 29 12. =Dispersion of Individual and Collective Fire= 31 13. =Searching= 35 14. =The Relation of Ground to Fire Effect= 38 CHAPTER III INSTRUCTION IN AIMING 15. =General Remarks= 43 16. =Aiming Instruction= 47 17. =Common Faults in Aiming= 50 18. =Triangle of Error= 51 19. =Aiming at Service Targets, Aiming at Ground, and Marking Down the Enemy= 53 20. =Aiming-Off for Wind= 55 21. =Aiming Up and Down= 57 22. =Aiming-Off for Movement= 58 23. =Practice in Rapid Adjustment of Sights= 60 CHAPTER IV ELEMENTARY INSTRUCTION IN FIRING 24. =Hints to Instructors= 62 25. =Trigger-Pressing and Snapping= 63 26. =The Various Firing Positions= 66 27. =Loading and Unloading= 69 28. =Use of the Safety-Catch and Cut-Off= 71 29. =Instruction in Aiming and Firing= 72 30. =Firing in the Open= 73 31. =Firing from Cover= 73 32. =Muscle Exercises= 77 CHAPTER V VISUAL TRAINING AND RANGING 33. =General Remarks on Visual Training= 81 34. =Discernment of Targets= 82 35. =Military Vocabulary and Study of Ground= 84 36. =General Remarks on Ranging= 89 37. =Judging Distances by Eye= 91 38. =Range-Finding by Observation of Fire= 96 39. =Ranging by Auxiliary Methods and by Instruments= 97 40. =Range-Cards and Range-Marks= 98 CHAPTER VI FIRE DIRECTION AND CONTROL 41. =General Remarks= 105 42. =Organization for Fire Action= 106 43. =Effect of Fire at Different Ranges on Various Formations and Objectives= 110 44. =Tactical Application of Rifle Fire= 112 45. =Description and Recognition of Targets= 119