Order of battle of the Waterloo Campaign the battles themselves (units spread across the area or on garrison duty). The casualty numbers include all the casualties suffered by each regiment over the three days of fighting during the campaign from 16 June 1815 to dawn on 19 June 1815. Present at the Battle of Waterloo Wellington had 71,257 soldiers available, 3,866 officers and 65,919 other ranks. By the end of the day's fighting the army had suffered 16,084 casualties (3,024 killed, 10,222 wounded and 2,838 missing) a loss of 24.6%. I Corps fielded 24,844 (1,233 officers and 23,383 other ranks) on 18 June 1815 taking into account
Battle of Waterloo and drive it back towards the sea. The historian Andrew Roberts notes that "It is a curious fact about the Battle of Waterloo that no one is absolutely certain when it actually began". Wellington recorded in his dispatches that at "about ten o'clock [Napoleon] commenced a furious attack upon our post at Hougoumont". Other sources state that the attack began around 11:30. The house and its immediate environs were defended by four light companies of Guards, and the wood and park by Hanoverian "Jäger" and the 1/2nd Nassau. The initial attack by Bauduin's brigade emptied the wood and park, but