On Oct. 9, 1894, the regiment again participated in a general mobilization of the militia at Boston. The monument to Robert Gould Shaw, on the Common, was formally dedicated May 31, 1897, and the regiment paraded in honor of the event. One feature of the day recalled certain historic processions of thirty years previously--the New York 7th, in which Col. Shaw had once served, came on to have a share in this demonstration of affection. On June 1, 1897, by act of the legislature, the regiment received a new name--it became the 1st Regiment of Heavy Artillery. In point of fact it had begun to separate from the 1st Brigade back in Col. Wellington’s time, and had become increasingly committed to the artillery branch; this act of legislation officially recognized a transition which had already taken place. Now the facings on the uniforms could be changed from the blue of infantry to the brighter and more distinctive scarlet. Massachusetts was the first state to have heavy artillery in its militia--the old regiment was again “first.” Companies were rechristened “batteries” in connection with the change of service. Col. Mathews became Brigadier General on July 19, 1897, and Charles Pfaff succeeded as Colonel on July 28. Col. Pfaff’s military training had been in the Cadets, and as Captain of the 8th Company, Coast Artillery; and he had served four years as Major. To him was to fall the honor of commanding the regiment during its Spanish War service. There was nothing unexpected about the war with Spain. From the day the “Maine” was destroyed until April 25, when war was declared, more than two months elapsed. Members of the command were in constant readiness during this entire period for the summons which they knew must come; and it was well understood that instant mobilization would ensue upon receipt of orders.