Order of battle of the Waterloo Campaign those not present in the Order of Battle and the casualties on the previous two days. With so much of the Dutch Belgian contingent not present at the battle, only 579 officers and 8,677 men (9,256 in total) were fielded by II Corps. With only three regiments not present at the battle the Cavalry Corps was the most complete at Waterloo fielding 16,133 (933 officers and 13,897 men) after taking into account the small losses at Quarte-Bras and during the retreat on 17 June 1815. The reserves, 34,394 men and 56 guns, came under the direct command of Wellington during
Battle of Waterloo Zieten obeyed and marched to Bülow's aid. Müffling saw this movement away and persuaded Zieten to support Wellington's left flank. Müffling warned Zieten that "The battle is lost if the corps does not keep on the move and immediately support the English army". Zieten resumed his march to support Wellington directly, and the arrival of his troops allowed Wellington to reinforce his crumbling centre by moving cavalry from his left. The French were expecting Grouchy to march to their support from Wavre, and when Zieten's I Corps appeared at Waterloo instead of Grouchy, "the shock of disillusionment shattered French morale"