On 17th October, the 2nd and 3rd Guards Brigades, including 1st Battalion Coldstream Guards, were back in the front-line, preparing for an attack onto the Hohenzollern Redoubt. It began at 5am, supported by artillery and trench mortars. But in the face of intensive enfilade machine-gun fire, Lord Cavan called the attack off at 8am. The decision had clearly not been taken lightly. To quote the official history: ‘Some idea of the severity of the fighting may be obtained from the fact that the two Guards brigades between them made use of 15,000 bombs, while both brigadiers agreed that they had experienced no more heavy shell fire during the war than between dawn and midday on the 17th October 1915
From an article in the Guards Magazine