=Chemical Warfare Troops.= And why should there not be fighting Chemical Warfare troops? They fight under exactly the same orders as all other troops. They conform to the same general plan of battle. They bring, however, to that battle experts in a line that it takes a long time to master. And where has there been any live commander in the world’s history who refused aid from any class of troops that might help him win? =Specialists in War.= The wars of the future will become more and more wars of the specialists. Your Infantry may remain the backbone of the fighting force, but if it has not the Artillery, the Aviation, the Chemical Warfare, the Engineers, the tanks and other specialists to back it up, it will be overcome by the army which has such specialists. Indeed the specialist goes into the very organization of the Infantry itself with its machine gun battalions, its tank battalions, and as now proposed, the Infantry light howitzer companies. =Duties of Chemical Warfare Staff Officers.= The Chemical Warfare officers on the staff of armies, corps and divisions are there for the purpose of giving expert advice as to the quantities of chemical materials available, the best conditions for using them, and the best way of avoiding the effects of enemy gas upon our own troops. The conditions that must be kept in mind are so many that no other officer can be expected to master and keep them if he does his own work well. The general staff officers and commanding generals will not have the time to even try to remember the actual effects of clouds, wind, rain, trees, valleys, villages and plains upon each and every gas. They must depend upon the Chemical Warfare officer for accurate information along those lines, and if he cannot furnish it they will have to secure some one who can. The history of war is filled with the names of generals who failed because they could not forget how to command a company. These Chemical Warfare officers will also furnish all data as to supply of chemical warfare materials, and will furnish the best information along lines of training, whether for defensive or offensive use of gas.