Yet it never completely disappeared in warfare. Gen. Rochambeau is said to have worn body armor at the siege of Yorktown. Great numbers of corselets and headpieces were worn in the Napoleonic wars. The corselet which John Paul Jones wore in his fight with the Serapis is preserved at the Metropolitan Museum of Art in New York. The Japanese army was mailed with good armor as late as 1870. Breastplates were worn to some extent in the Civil War in the United States, and an armor factory was actually established at New Haven, Conn., about 1862. In the museum at Richmond, Va., is an equipment of armor taken from a dead soldier in one of the trenches at the siege of that city. There was a limited use of armor in the Franco-Prussian War. Some of the Japanese troops carried shields at Port Arthur. Helmets were worn in the Boer War. A notorious Australian bandit in the eighties for a long time defied armed posses to capture him because he wore armor and could stand off entire squads of policemen firing at him with Martini rifles at close range. Thus it can not be said that armor, in coming into use again in the great war, was resurrected; it was merely revived. In its static condition during most of the four-year period, the war against Germany was one in which armor might profitably be used. This opportunity could scarcely be overlooked, and indeed it was not. Everybody knows of the helmets that were in general use; yet body armor itself was coming into favor again, and only the welcome but unexpected end of hostilities prevented it, in all probability, from becoming again an important part of the equipment of a soldier. As a consequence of the attenuated but persistent use of armor by soldiers during the past two centuries and of the demand of the aristocratic for helmets and armor as ornaments, the armorer's trade had been kept alive from the days of Gustavus Adolphus to the present. The war efforts of the United States in 1917 and 1918 demanded a wide range of human talents and special callings; but surely the strange and unusual seemed to be reached when in the early days of our undertaking the Engineering Division of the Ordnance Department sought the services of expert armorers. Through the advice of the National Research Council, which had established a committee of armor experts, the Ordnance Department commissioned in its service Maj. Bashford Dean, a life-long specialist in armor, curator in the Metropolitan Museum of Art, an institution which, learning of the Government's need, at once placed at its disposal its wonderful specimens of authentic armor, its armor repair shop where models could at once be made, and the services of Maj. Dean's assistant there whom he had brought from France, Daniel Tachaux, one of the few surviving armorers, who had inherited lineally the technical side of the ancient craft.