Lieut.-Col. I. W. Vidito was transferred to the Reserve of Officers on July 1, 1917, and was succeeded in the command of the Regiment by Lieut.-Col. C. A. Mumford. On the morning of December 6, 1917, five officers and 143 other ranks were detailed for relief work following the explosion at Halifax. On April 16, 1918, the 6th Battalion Canadian Garrison Regiment was authorized, and in May the 63rd Regiment was relieved from duty. The following named officers were transferred to the 6th Battalion: Lieut.-Col. C. A. Mumford, Capts. E. Ricketts, H. J. Steck, E. K. McKay, G. S. Kinley, Lieuts. H. V. Wier, J. A. Watters, E. G. McMinn, G. W. Churchill, J. E. Milsom, H. R. McCoughin, G. R. Forbes, R. J. Colwell. The undermentioned officers were transferred to the 1st Nova Scotia Depot Battalion: Lieuts. H. A. Wilson, W. R. R. Tayler, H. S. Holloway, Majors A. R. McCleave and H. N. Clarke, Capts. F. C. Kingdon, J. D. Monoghan and Lieut. T. Parkman were relieved from active service. On the organization of the First Canadian Contingent the Regiment volunteered for service Overseas, but much to the disappointment of all ranks had to continue its allotted duties in the defence of the Fortress of Halifax. Owing to the heavy demands on the Ordnance Department for clothing and equipment needed by troops preparing for embarkation the requirements of troops on Home Service could not be met until late in 1914, and for some time clothing was patched with flour sacks or any other material available, and worn out soles of boots were reinforced with shingles. In spite of all discouragements the 63rd faithfully performed the tasks assigned it, and when at last it was permitted to send drafts Overseas it became the ambition of all ranks to obtain a transfer to the Overseas Company. Altogether the Regiment supplied 70 officers and 815 other ranks for service at the Front.