At the outbreak of the Great War there were in addition to the 1st and 2nd Battalions, two Special Reserve Battalions (the 3rd and 4th) and five Territorial Battalions, numbered the 5th, 6th, 7th, 8th and 9th.
After declaration of war, the 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th and 20th Service Battalions were raised, together with the 21st (Territorial) and 1st (Garrison) Battalions. In addition, the 5th, 6th, 7th, 8th and 9th Battalions each had second and third lines, and at one time there were as many as thirty Battalions in existence. These were more or less connected with the City of Glasgow and district, and serve as an indication of the patriotism and loyalty of the community.
On 14th December, 1914, the War Office issued an order that the Chamber of Commerce Battalion was to form a unit of the New Army, and was to be designated the 17th (Service) Battalion Highland Light Infantry, of the 117th Infantry Brigade, of the 39th Division. This intimation was received when the Battalion was stationed at Troon, and was hailed with great enthusiasm by all ranks.
Their comradeship in the common cause, their keenness for practical service and the esprit de corps engendered by their attachment to the illustrious Highland Light Infantry, knit all ranks together in enthusiasm and determination.
On the Sea Front at Troon.[ToList]
Lt.-Col. David S. Morton, V.D., C.M.G.[ToList]