. "1"^^ . "The 1st District of Columbia Cavalry was a Union Army infantry regiment which fought in the American Civil War."@en . . "Lafayette C. Baker"@en . . . . "1st District of Columbia Cavalry"@en . . . . . . . "The 1st District of Columbia Cavalry was a Union Army infantry regiment which fought in the American Civil War."@en . . . "1863"^^ .