On 18 March 1908, Inverness-shire Royal Horse Artillery (Territorial Force) was proposed as a new unit and it was recognised by the Army Council on 11 June 1908. It consisted of:[3][4][5]
In accordance with the Territorial and Reserve Forces Act 1907 (7 Edw.7, c.9) which brought the Territorial Force into being, the TF was intended to be a home defence force for service during wartime and members could not be compelled to serve outside the country. However, on the outbreak of war on 4 August 1914, many members volunteered for Imperial Service. Therefore, TF units were split into 1st Line (liable for overseas service) and 2nd Line (home service for those unable or unwilling to serve overseas) units. 2nd Line units performed the home defence role, although in fact most of these were also posted abroad in due course.[8]
1/1st Inverness-shire
The battery was embodied with the Highland Mounted Brigade on 4 August 1914 at the outbreak of the First World War. The brigade was placed under First Army of Central Force; it moved to the Huntingdon area and then to Lincolnshire in November 1914.[10] In March 1915, the battery was attached to 2/1st South Midland Mounted Brigade (along with its 2nd line, 2/1st Inverness-shire RHA) in 2/2nd Mounted Division in Norfolk. The battery remained in the United Kingdom until February 1916 when it (and its ammunition column) was embarked at Southampton and transported to Egypt, landing at Alexandria between 22 and 25 February 1916.[11]
The battery served with the ANZAC Mounted Division in the Sinai and Palestine Campaign throughout the rest of the war. With the division, it saw action at the Battle of Romani (4 – 14 August 1916) as part of No. 3 Section, Suez Canal Defences. This saw the repulse of the final Turkish attempt to cut the Suez Canal.[15]
In June 1917, the Desert Column was reorganised from two mounted divisions of four brigades each (ANZAC and Imperial Mounted Divisions) to three mounted divisions of three brigades each (ANZAC, Australian – Imperial Mounted Division renamed – and the new Yeomanry Mounted Division).[17] Consequently, the 22nd Mounted Brigade was transferred from the ANZAC to the Yeomanry Mounted Division on 6 July 1917. With a reduction to three brigades, there was a corresponding reduction in the artillery to three batteries. The Leicestershire Battery, RHA (T.F.) departed on 20 June to join XX Brigade, RHA (T.F.) in the Yeomanry Mounted Division.[13][b]
After the Armistice of Mudros, the division was withdrawn to Egypt. The Australian brigades departed for home in March and April 1919 and the New Zealanders by the end of July.[15] The brigade was broken up some time after April 1919.[12]
Inverness-shire RHA formed a 2nd line in 1914, initially designated as the Inverness-shire (Reserve) Battery RHA[21] and later given a fractional designation as 2/1st Inverness-shire Battery, RHA.[8]2/1st Highland Mounted Brigade was formed in January 1915.[22]
The Inverness-shire RHA was not reconstituted until 7 February 1920 when it formed a battery (later numbered 297th) in 1st Highland Brigade, Royal Field Artillery (later 75th (Highland) Field Regiment, RA) and ceased to be a Royal Horse Artillery battery. In 1939, 297 Field Battery was converted into 297 (Inverness) Heavy Anti-Aircraft Battery, an independent unit that later joined 101st Heavy Anti-Aircraft Regiment and fought in the defence of Scapa Flow and later in the Burma campaign.[23][24][25]
^22nd Mounted Brigade was originally designated as the North Midland Mounted Brigade. Leicestershire RHA had been formed in 1908 for this brigade[3] and was mobilised with it in 1914.[6]
^Frederick[12] makes clear that XVIII Brigade was distinct from IV Brigade and was not IV Brigade redesignated.
Becke, Major A.F. (1936). Order of Battle of Divisions Part 2A. The Territorial Force Mounted Divisions and the 1st-Line Territorial Force Divisions (42–56). London: His Majesty's Stationery Office. ISBN1-871167-12-4.
Clarke, Dale (2004). British Artillery 1914–19 Field Army Artillery. Vol. 94 of New Vanguard Series. Oxford: Osprey Publishing. ISBN1-84176-688-7.
Farndale, General Sir Martin (1988). The Forgotten Fronts and the Home Base, 1914–18. History of the Royal Regiment of Artillery. Woolwich: The Royal Artillery Institution. ISBN1-870114-05-1.
Frederick, J.B.M. (1984). Lineage Book of British Land Forces 1660–1978. Wakefield, Yorkshire: Microform Academic Publishers. ISBN1-85117-009-X.
Litchfield, Norman E.H., (1992) The Territorial Artillery 1908–1988 (Their Lineage, Uniforms and Badges), Nottingham: Sherwood Press, ISBN0-9508205-2-0.
Perry, F.W. (1992). Order of Battle of Divisions Part 5A. The Divisions of Australia, Canada and New Zealand and those in East Africa. Newport: Ray Westlake Military Books. ISBN1-871167-25-6.
Rinaldi, Richard A (2008). Order of Battle of the British Army 1914. Ravi Rikhye. ISBN978-0-97760728-0.
Westlake, Ray (1992). British Territorial Units 1914–18. Osprey Publishing. ISBN978-1-85532-168-7.