The Actions of the Hohenzollern Redoubt took place on the Western Front in World War I from 13 to 19 October 1915, at the Hohenzollern Redoubt near Auchy-les-Mines in France. In the aftermath of the Battle of Loos, the 9th (Scottish) Division captured the strongpoint and then lost it to a German counter-attack. The British attack on 13 October failed and resulted in 3,643 casualties, mostly in the first few minutes. In the History of the Great War, James Edmonds wrote that "The fighting [from 13 to 14 October] had not improved the general situation in any way and had brought nothing but useless slaughter of infantry".

The Hohenzollern Redoubt was a strongpoint of the German 6th Army on the Western Front during the First World War, at Auchy-les-Mines near Loos-en-Gohelle in the Nord-Pas-de-Calais region of France. Named after the House of Hohenzollern, the redoubt was fought for by German and British forces. Engagements took place from the Battle of Loos (25 September – 14 October 1915) to the beginning of the Battle of the Somme on 1 July 1916, including the action of the Hohenzollern Redoubt in 1915 and the British Attack at the Hohenzollern Redoubt from 2 to 18 March 1916.