54.--Give a general caution for the use of all ammunition. 55.--What is essential to secure effective artillery fire? 56.--What should be done if one's own artillery fire falls short upon one's own trenches? 57.--How is coordination between artillery and infantry secured in case of a raid? 58.--What are the principal items of the morning schedule, of the afternoon schedule? 59.--Describe the preparations for leaving the trenches. 60.--What orders are given at the time of relief? 61.--What is done before the men are dismissed to their billets? 62.--How should the days in rest billets be utilized? 63.--Describe a typical day in the trenches. 64.--Describe a typical day in rest billets. 65.--What should be the supreme aim alike of men and officers? Part II. French Infantry Combat Principles. FRENCH INFANTRY COMBAT PRINCIPLES. OPEN WARFARE. 106.--Is open warfare probable? It is improbable that in this war trench warfare will definitely give place on all sectors of the front to open warfare. But the tactics that have forced several retirements will force others. If sufficient troops are available, tried and fit and resolute, with the necessary quantities of ammunition and improved artillery, we shall see German arrogance and brutality in victory become again cringing fear and demoralization in defeat; the experience of the Marne will be repeated and the invaders will be driven out of the territory they swarmed over through treacherous breaking of treaties. 107.--The need of training in Infantry Combat Principles. That day the infantry will come again unto its own and its dash and resolution will insure victory. To achieve it, it must be a well trained infantry, in the old sense of the word. Officers, non-commissioned officers and men must have a thorough and practical knowledge of Infantry Combat Principles. These should be practiced in the intervals of trench service when the battalion is in rest billets. Their theory should be thoroughly mastered by all on whom may devolve responsibility. 108.--The two phases of the Combat. We shall study here the two principal phases of the combat: the approach and the attack, from the point of view of the company commander. 109.--The Defense. We shall also consider the Combat from the standpoint of the Defense. THE APPROACH. 110.--All maneuvering at close range impossible. In the attack, the infantry can proceed only straight ahead. Under infantry fire all maneuvering is impossible. Therefore by "approach" is meant all maneuvering preparatory to the attack: It brings the troops directly in front of and as near as possible to the objective. PRELIMINARY DISPOSITIONS TO START THE APPROACH. 111.--The orders to attack. The company commander will receive his orders from the battalion commander. 112.--Equipment and Liaison. In the meanwhile let the lieutenants: