 It became standard issue for as long as the U.S. horse cavalry existed and is still used for ceremonies.McClellan resigned his commission January 16, 1857, and, capitalizing on his experience with railroad assessment, became chief engineer and vice president of the Illinois Central Railroad, and then president of the Ohio and Mississippi Railroad in 1860.He performed well in both jobs, expanding the Illinois Central toward New Orleans and helping the Ohio and Mississippi recover from the Panic of 1857.