Battalion was soon assigned to the 19th (Western) Division, eventually being assigned to the 58th Brigade. In July 1915, the battalion was sent to France with the rest of the division. It would see action at the Battle of the Loos, Battle of the Somme, and Third Ypres. Due to losses sustained in Passchendaele campaign in 1917, the 6th Battalion would be amalgamated with the Wiltshire Yeomanry to form the 6th (Royal Wiltshire Yeomanry) battalion on 9 September 1917. Eventually, the battalion would be reduced to cadre strength. The excess personnel would be used as replacements for the 2nd Battalion which assumed its place in the 58th Brigade. The cadre was returned to England on 18 June 1918 and the battalion brought up to strength by absorbing the 9th Battalion, Dorset Regiment. Now assigned to the 14th (Light) Division, the 6th Wilts became part of the 42nd Brigade. With the rest of the division, it returned to France in July 1918, seeing action in the Battle of Avre. 7th (Service) Battalion Also formed at the Wiltshire Regiment's depot in Devizes in September 1914, the 7th (Service) Battalion was part of the Third New Army (or K3) of Kitchener's scheme. Soon after formation, the battalion became part of the 79th Brigade, assigned to the 26th Division. In September 1915, the division was transferred to France before being reassigned to the Mediterranean as part of the British forces fighting in Salonika. As part of the division, the battalion was engaged in the Battle of Horseshoe Hill in 1916, and First and Second Battles of Dorian in 1916 and 1917. In June 1918, the 7th Wilts transferred to France, arriving there in July 1918. After the German spring offensives, many divisions needed be rebuilt with fresh battalions to replace those decimated by the German offensives. Once in theatre, 7th Wilts was assigned to the 150th Brigade of the 50th (Northumbrian) Division. As part of the 50th Division, the battalion took part in the October 1918 battles, including Battle of St. Quentin Canal, the Battle of the Beaurevoir Line, and the Battle of Cambrai during the Hundred Days Offensive. 8th (Service) Battalion Formed from volunteers at Weymouth in November 1914, the 8th (Service) Battalion was part of Kitchener's Fourth New Army. Originally assigned to the 102nd Brigade, 34th Division, the War Office decided to convert the battalion into a reserve battalion. Eventually in September