that adorns the shoulder sleeve insignia is worn by certain field grade officers and command sergeants major in the brigade combat team. The most famous version of the Bowie knife was designed by Jim Bowie and presented to Arkansas blacksmith James Black in the form of a carved wooden model in December 1830. Black produced the knife ordered by Bowie, and at the same time created another based on Bowie's original design but with a sharpened edge on the curved top edge of the blade. Black offered Bowie his choice and Bowie chose the modified version. Knives like that one, with a blade shaped like that of the Bowie knife, but with a pronounced false edge, are today called "Sheffield Bowie" knives, because this blade shape became so popular that cutlery factories in Sheffield, England were mass-producing such knives for export to the United States by 1850, usually with a handle made from either hardwood, deer antler, or bone, and sometimes with a guard and other fittings of sterling silver. Bowie returned, with the Black-made knife, to Texas and was involved in a knife fight with three men who had been hired to kill him. Bowie killed the three would-be assassins with his new knife and the fame of the knife grew. Legend holds that one man was almost decapitated, the second was disemboweled, and the third had his skull split open. Bowie died at the Battle of the Alamo five years later and both he and his knife became more famous. The fate of the original Bowie knife is unknown; however, a knife bearing the engraving "Bowie No. 1" has been acquired by the Historic Arkansas Museum from a Texas collector and has been attributed to Black through scientific analysis. Black soon did a booming business making and selling these knives out of his shop in Washington, Arkansas. Black continued to refine his technique and improve the quality of the knife as he went. In 1839, shortly after his wife's death, Black was nearly blinded when, while he was in bed with illness, his father-in-law and former partner broke into his home and attacked him with a club, having objected to his daughter having married Black years earlier. Black was no longer able to continue in his trade. Black's knives were known to be exceedingly tough, yet flexible, and his technique has not been duplicated. Black kept his technique