Question: The British Second Army was a field army active during the First and Second World Wars, durong the First World War the army was active on the Western Front throughout most of the war and later active in Italy, the Italian Front, was a series of battles at the border between Austria-Hungary and Italy, fought between 1915 and 1918, in which event?

Context paragraphs:
8th Infantry Division (United Kingdom): The 8th Infantry Division was an infantry division of the British Army that was active in both World War I and World War II.  The division was first formed in October 1914 during World War I, initially consisting mainly of soldiers of the Regular Army and served on the Western Front throughout the war, sustaining many casualties, before disbandment in 1919.  The division was reactivated in Palestine, under the command of Major-General Bernard Montgomery, in the late 1930s in the years running up to the Second World War before being disbanded in late February 1940.  It was briefly reformed in Syria in an administrative role during 1942-3.

Italian Front (World War I): The Italian Front (Italian: "Fronte italiano" ; in German: "Gebirgskrieg" , "Mountain war") was a series of battles at the border between Austria-Hungary and Italy, fought between 1915 and 1918 in World War I.  Following the secret promises made by the Allies in the Treaty of London, Italy entered the war in order to annex the Austrian Littoral and northern Dalmatia, and the territories of present-day Trentino and South Tyrol.  Although Italy had hoped to gain the territories with a surprise offensive, the front soon bogged down into trench warfare, similar to the Western Front fought in France, but at high altitudes and with very cold winters.  Fighting along the front displaced much of the civilian population, of which several thousand died from malnutrition and illness in Italian and Austrian refugee camps.  The Allied victory at Vittorio Veneto and the disintegration of Austria-Hungary ended the military operations.

Second Army (United Kingdom): The British Second Army was a field army active during the First and Second World Wars.  During the First World War the army was active on the Western Front throughout most of the war and later active in Italy.  During the Second World War the army was the main British contribution to the Normandy landings on 6 June 1944 and .

95th Brigade (United Kingdom): The 95th Brigade was an infantry brigade formation of the British Army, created during World War I.  It was raised from men volunteering for Lord Kitchener's New Armies and assigned to the 32nd Division.  The brigade, initially composed of three service battalions (the 14th, 15th and 16th, the Birmingham Pals) of the Royal Warwickshire Regiment and one (the 12th, Bristol's Own) of the Gloucestershire Regiment, was sent to the Western Front in November 1915, where it was to serve for most of the war, and later briefly on the Italian Front in late 1917 before returning to the Western Front in April 1918.  In December 1915, the brigade was transferred to the 5th Division, a Regular Army formation, and all three battalions of the Royal Warwickshire Regiment were exchanged for three Regular Army battalions, and was to remain with this composition for the rest of the war.

Third Army (United Kingdom): The Third Army was a field army of the British Army during World War I that saw active service on the Western Front throughout the war.

143rd Infantry Brigade (United Kingdom): The 143rd Infantry Brigade was an infantry brigade of the British Army that saw active service in both World War I and World War II.  In the First World War the brigade served on both Western Front and later the Italian Front.  During the Second World War the brigade fought in Belgium and France before being evacuated to England where it remained for the rest of the war and was finally disbanded in 1946.  Raised again in the 1980s, this brigade disbanded under Army 2020 in November 2014.

Shropshire Royal Horse Artillery: The Shropshire Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Shropshire in 1908 from the Shropshire Battery of the 1st Shropshire and Staffordshire Artillery Volunteers, Royal Garrison Artillery of the Volunteer Force.  It saw active service during the First World War on the Western Front in 1917 and 1918 as part of an Army Field Artillery Brigade.  A second line battery, 2/1st Shropshire RHA, also served on the Western Front in 1917 and 1918 as part of another Army Field Artillery Brigade.  It was reconstituted post-war as a medium artillery battery and served as such in the Second World War.

125th (Lancashire Fusiliers) Brigade: The 125th (Lancashire Fusiliers) Brigade was an infantry brigade formation of the British Army that saw active service during both the First and Second World Wars.  It was assigned to the 42nd (East Lancashire) Division and served in the Middle East and later in the trenches of the Western Front in the First World War.  In the Second World War the brigade, now redesignated 125th Infantry Brigade, fought in Belgium and France before being evacuated at Dunkirk and was then converted into 10th Armoured Brigade.

Operation Blackcock: Operation "Blackcock" was an operation to clear German troops from the Roer Triangle, formed by the towns of Roermond and Sittard in the Netherlands and Heinsberg in Germany during the fighting on the Western Front in the Second World War.  It was conducted by the British Second Army between 14 and 26 January 1945.  The objective was to drive the German 15th Army back across the rivers Rur and Wurm and move the frontline further into Germany.  The operation was carried out by Lieutenant-General Neil Ritchie's XII Corps by three divisions: the 7th Armoured Division (Major-General Lewis Lyne), the 43rd (Wessex) Infantry Division (Major-General Gwilym Ivor Thomas) and the 52nd (Lowland) Infantry Division (Major-General Edmund Hakewill-Smith).  The operation, named after the Scottish black male grouse, is relatively unknown despite the sometimes fierce battles that were fought for each and every village and hamlet within the Roer Triangle.

IV Corps (United Kingdom): IV Corps was a corps-sized formation of the British Army, formed in both the First World War and the Second World War.  During the First World War the corps served on the Western Front throughout its existence.  During the Second World War it served in Norway and Britain until Japan entered the war and India was threatened with attack, it was transferred there.

Supporting paragraphs: Second Army (United Kingdom) Italian Front (World War I)
Answer: World War I