 Complete the following phrase:  On April 19, 1861, the 6th Massachusetts Volunteer Regiment arrived via train in Baltimore en route to Washington, D.C., where it had been called to fortify the city against what was believed to be impending attack by the Confederate States. The main body of the 6th Massachusetts proceeded out from the President Street Station on foot to make a connecting train at Canton Depot, temporarily leaving its 24-piece band posted at the first station. As the regiment entered downtown Baltimore it was 