THE last of the three regimental subdivisions—the Third Battalion, under Major Frye—meanwhile quietly had been going on with its artillery work at Fort Warren. Other than the ordering of Major Morris, Seventh Artillery, from Winthrop to Fort Schuyler, N.Y., on May 27th, leaving Captain Richmond the ranking officer at the mortar battery, there had been no changes in the garrisons of the sub-posts about the harbor. The departure of Colonel Pfaff and Lieutenant-Colonel Woodman, with their commands, had rendered necessary a reassignment of battery duties at Fort Warren, and Colonel Woodruff issued orders accordingly on June 13th. Of the regular batteries, "C" (Schenck's), Second Artillery, took charge of the 10-inch rifle and 4-inch rapid-fire guns—at that time in process of being mounted—in Bastion B, while "G" (Brown's), Seventh Artillery, had its station at the 10-inch rifles of the ravelin battery. Surplus men from these two batteries, as the daily recruiting swelled their ranks, were told off for manning various groups of the older type guns in the fort. Of the volunteer batteries, "M" (Braley's) was assigned to the field and machine gun sections for the protection of the channel mine-lines, Nantasket Roads mine-field, and the cable chute through which the entire system was controlled; "I" (Williamson's) went to the 15-inch Rodman guns in Bastion A; "F" (Danforth's) drew the battery of 10-inch Rodmans on the channel face of the fort; while to "E" (Gibbs') fell the barbette and casemate batteries of 8-inch rifles at the southeastern angle. These assignments were made for a very definite purpose, and they remained in effect until after the destruction of the Spanish fleet at Santiago, when, to break the monotony of gun-drill on one type of gun, the volunteer batteries interchanged at their stations. [Illustration: MAJOR JAMES A. FRYE, U.S.V. Commanding Third Battalion. ]