at Edinburgh The 1st (City of Edinburgh) Battery was formed in the 1st Lowland Brigade, Royal Field Artillery, the rest of which came from the 1st Midlothian RGA Members of Edinburgh University who had served in Left Half, 1st Heavy Battery, transferred to the Edinburgh University contingent of the Senior Division of the Officers' Training Corps (OTC) 1st Berwickshire RGA (V) was disbanded Subsequently, the Lowland (City of Edinburgh) RGA became the Lowland (City of Edinburgh) Heavy Battery, RGA, based at McDonald Road, Edinburgh, with its own ammunition column. It formed part of the Lowland Division of the TF. World War I Mobilisation On the outbreak of war on 4 August 1914, the Lowland Hvy Bty began mobilising at Edinburgh with its four 4.7-inch guns, under the command of Major J.B. Cameron. Almost immediately, TF units were invited to volunteer for Overseas Service. On 15 August 1914, the WO issued instructions to separate those men who had signed up for Home Service only, and form them into reserve units. On 31 August, the formation of a reserve or 2nd Line unit was authorised for each 1st Line unit where 60 per cent or more of the men had volunteered for Overseas Service. The titles of these 2nd Line units would be the same as the original, but distinguished by a '2/' prefix. The 2/1st Lowland (City of Edinburgh) battery was formed in the 2nd Lowland Division. 1/1st Lowland (City of Edinburgh) Heavy Battery The battery and ammunition column completed mobilisation on 14 August and moved out to its war station at Stirling in the Scottish Coastal Defences the following day. When the Lowland Division (numbered as the 52nd (Lowland) Division) embarked for the Gallipoli Campaign in May and June 1915, its heavy battery remained training in Scotland. It moved from Stirling to Cupar on 25 October, then on 26 January 1916 it moved south to the RA depot at Woolwich to prepare for overseas service. 1/1st Lowland Hvy Bty was sent to join the British Expeditionary Force (BEF) on the Western Front, disembarking at Le Havre in France on 16 February. Two days later, it joined XVII Brigade, RGA, at Authie. The RGA brigades were renamed Heavy Artillery Groups (HAGs) shortly afterwards, and the policy was move batteries between HAGs as required. 1/1st Lowland Hvy Bty moved to 16th HAG on 3 March, then to 48th HAG on 17 April.