With the new American mask, with its much stronger and stiffer face material, the chances are that the life will be considerably increased although the more constant use of the mask will probably offset its greater durability. A longer life of mask would of course be a decided advantage as it would not only reduce tonnage, but would reduce manufacturing and distribution as well. The estimates on which we were working at the end looked forward to requiring from the United States about one-third pound per man per day for all troops in France, in order to keep them supplied with gas defense material and with the gases used offensively by gas troops. All gas shell, hand grenades, etc., used by other than gas troops required tonnage in addition to the above. SUMMING UP In summing up then, it is noted that there are several important things in defense against gas. First, the mask which protects the eyes and the lungs. Second, the training that teaches the man how to utilize to best advantage the means of protection at his disposal, whether he be alone or among others. Third, protective clothing that protects hands and feet and the skin in general. Fourth, a knowledge of gases and their tactical use that will enable commanders, whenever possible, to move men out of gas infected areas. Fifth, training in the offensive use of gas, as well as in defensive methods, to teach the man that gas has no uncanny power and that it is simply one element of war that must be reckoned with, thus preventing stampedes when there is really no danger. While these are the salient points in defense against gas, above them and beyond them lies the vigorous offensive use of gas. This involves not only the research, development and manufacture of necessary gases in peace time, but also the necessary training to enable our nation to hurl upon the enemy on the field of battle chemical warfare materials in quantities he cannot hope to attain. CHAPTER XXV PEACE TIME USES OF GAS “Peace hath her victories no less renowned than war.” Thus runs the old proverb. In ancient times war profited by peace far more than peace profited by war if indeed the latter ever actually occurred. The implements developed for the chase in peace became the weapons of war. This was true of David’s sling-shot, of the spear and of the bow. Even powder itself was probably intended and used for scores of years for celebrations and other peaceful events.