Some additional info:
On June 11, Private McCormick of Company B, 13th NYSM, borrowed a musket from a comrade who was acting as a cook. Practicing the manual of arms a few minutes before drill, McCormick came to the position of "charge bayonet" and pulled the trigger of his piece, discharging it. Clarence McKenzie was sitting on the ground reading his Bible when the bullet struck him in the back and exited from his stomach. It was three o'clock. He lasted for two hours, cradled in Captain Balsdon's arms. Confusion over the shock gave way to anger and Clarence demanded that the Captain have McCormick shot, but he then began to worry about the effect of the news on his parents. The 13th formed up the next morning to escort the remains, in a crate of ice, to the railroad station. Captain Balsdon, four soldiers, and William returned to the McKenzie home at #23 Liberty Street.
At 4 PM on July 14, a funeral service was held at St John's Church within a few blocks of where the GAR Plaza now stands. Miles away, in Virginia, Mr. Lincoln's army was preparing for its move toward Manassas and Major Sullivan Ballou of the Second Rhode Island Volunteers wrote a poignant letter to his wife Sarah. Rev. Elijah Guion, who would later become chaplain of the 1st New Orleans US Volunteers, preached Clarence's eulogy, charging the conspirators of the South with all wartime evils and calling his audience to support the government, thereby avenging Clarence McKenzie's death at the age of 12 years, 3 months, and 20 days. Blind Rev. McClelland made touching remarks to the children who were present.
Clarence was buried in Greenwood Cemetery, where a white bronze marker stands today topped by a statue of him playing his drum. It was said that his dog "Jack" returned to the cemetery daily for weeks, waiting by the freshly-turned earth.