The word _patrol_, which was used very much especially in the early days of the Great War, has an interesting origin. It may mean a small body of soldiers or police sent out to go round a garrison, or camp, or town, to keep watch; or, again, it may mean a small body of troops sent on before an advancing army to "reconnoitre"--that is, to spy out the land, the position of the enemy, etc. The word _patrol_ literally means to "paddle in mud," for the French word, _patrouille_, from which it came into English in the seventeenth century, came from an earlier word with this meaning. The word _campaign_, by which we mean a number of battles fought within a certain time, and generally according to a plan arranged beforehand, also came from the French word _campagne_ at the beginning of the eighteenth century--a century of great wars and many campaigns. The word was more used in those earlier wars than it is now, because in those days the armies used practically never to fight in the winter, and so each summer during a war had its "campaign." The earlier meaning of the French word _campagne_, and one which it still keeps besides this later meaning, is "open country," the kind of country over which battles were generally fought. _Recruit_ is another word which came into English from the French at this time. It, again, is a word which has been used a great deal in the European war. It came from the French word _recrue_, which also means a newly-enlisted soldier. The French word _croitre_, from which _recrue_ came, was derived from the Latin word _crescere_, "to increase." All these words, we should notice, have now a figurative use. We speak of "recruits" not only to the army, but to any society. Thus we may say a person is a valuable "recruit" to the cause of temperance, etc. A "campaign" can be fought not only on the field of battle, but through newspapers, meetings, etc. It is in this sense that we speak of the "campaign" for women's suffrage, etc. Many words relating to the dress and habits of our soldiers have curious origins. We say now quite naturally that a man is "in khaki" when we mean that he is a soldier, because the peculiar yellow-brown colour which is known as "khaki" is now the regular colour of the uniform of the British soldier. In earlier days the British soldier was generally a "redcoat," but in modern trench warfare it is so important that the enemy should not be able to pick out easily the position of groups of men in order to "shell" them, that the armies of all nations use gray or brown or other dull shades. _Khaki_ is a word which came into English through the South African War, when the policy of clothing the soldiers in this way was first begun on a large scale. It comes from a Hindu word, _khak_, which means "dust." The object of this kind of clothing for our soldiers is that they shall not be easily distinguished from the soil of the trenches and battle-fields.