Alfred S. Roe, The Thirty-Ninth Regiment Massachusetts Volunteers…
“ Of the satisfying spectacle of dress parade, an observer of the time comments, "So perfect and strict were the drill and personal appearance that in our line, of from eight hundred to nine hundred men, not the slightest difference could be detected in any movement from one flank to the other, as if performed by one man, and, in that test of perfect drill, 'Order arms,' though on a brick sidewalk, not one musket was behind the other, all striking with one crash, which startled the spectators, resembling a perfect volley of musketry." ”
