Just before the attack by X Corps and III Corps began on 3 July, Gough revealed that X Corps could not attack before and at noon, VIII Corps and X Corps were detached from the Fourth Army to Gough and the Reserve Army. Later II Corps, I Anzac Corps and the Canadian Corps were added to the Reserve Army. For the next few months the Reserve Army fought the Battle of Pozières and the Battle of Mouquet Farm The Battle of Thiepval Ridge took place as part of the sequential offensives of the French Sixth, the Fourth and then the Reserve Army during September. For much of October, the Reserve Army conducted the Battle of the Ancre Heights and on 30 October, the army was renamed the Fifth Army.