Following the firing on the Federal installation of Fort Sumter in Charleston harbor in South Carolina in early April 1861, he led a contingent of Maryland state militia to burn the railroad bridges around Baltimore to prevent the entry of any more Federal regular army or Northern state militia from passing through the divided riotous city following the bloodshed conflict of the Pratt Street Riots on April 19, 1861, on the orders of the Mayor of Baltimore George William Brown and Governor of Maryland Hicks.