"Buonaparte, having collected the first, second, third, fourth, and sixth, corps of the French army, and the imperial guards, and nearly all the cavalry, on the Sambre, and between that river and the Meuse, between the 10th and the 14th of the month, advanced, on the 15th, and attached the Prussian posts at Thuin and Lopez on the Sambre, at day-light in the morning.
"I did not hear of these events till the evening of the 15th, and I immediately ordered the troops to prepare to march; and afterwards to march to the left, as soon as I had intelligence from other quarters to prove that the enemy's movement upon Charleroi was the real attack.
"The enemy drive the Prussian posts from the Sambre on that day; and General Ziethen, who commanded the corps which had been a Charleroi, retired upon Fleurus; and Marshal Prince Blucher concentrated the Prussian army upon Sombref, holding the villages of St. Amand and Ligny in front of his position.
"The enemy continued his march along the road from Charleroi towards Brussels, and, on the same evening, the 15th, attacked a brigade of the army of the Netherlands, under the Prince de Weimar, posted at Frasne, and forced it back to the farm-house on the same road, called Les Quatre Bras.
"The Prince of Orange immediately reinforced this brigade with another of the same division, under General Perponcher, and, in the morning early, regained part of the ground which had been lost, so as to have the command of the communication leading from Nivelles and Brussels, with Marshal Blucher's position.
"In the mean time, I had directed the whole army to march upon Les Quatre Bras, and the fifth division under Lieutenant-general Sir Thomas Picton arrived at about half-past two in the day, followed by the corps of troops under the Duke of Brunswick, and afterwards by the contingent of Nassau.
"At this time the enemy commenced an attack upon Prince Blucher with his whole force, excepting the first and second corps; and a corps of cavalry under General Kellermann, with which he attached our post at Les Quatre Bras.
"The Prussian army maintained their position with their usual gallantry and perseverance, against a great disparity of numbers, as the fourth corps of their army, under General Bulow, had not joined, and I was not able to assist them as I wished, as I was attacked myself, and the troops, the cavalry in particular, which had a long distance to march, had not arrived.
"We maintained our position also, and completely defeated and repulsed all the enemy's attempts to get possession of it. The enemy repeatedly attacked us with a large body of infantry and cavalry, supported by a numerous and powerful artillery; he made several charges with the cavalry upon our infantry, but all were repulsed in the steadiest manner. In this affair, his Royal Highness the Prince of Orange, the Duke of Brunswick, and Lieutenant-general Sir Thomas Picton, and Major-general Sir James Kempt, and Sir Denis Park, who were engaged from the commencement of the enemy's attack, highly distinguished themselves, as well as Lieutenant-general Charles Baron Alten, Major-general Sir C. Halket, Lieutenant-general Cooke, and Major-generals Maitland and Byng, as they successively arrived. The troops of the fifth division, and those of the Brunswick corps, were long and severely engaged, and conducted themselves with the utmost gallantry. I must particularly mention the twenty-eighth, forth-second, seventy-ninth, and ninety-second regiments, and the battalion of Hanoverians.
"Our loss was great, as your lordship will perceive by the enclosed return; and I have particularly to regret his Serene Highness the Duke of Brunswick, who fell, fighting gallantly, at the head of his troops.
"Although Marshal Blucher had maintained his position at Sombref, he still found himself much weakened by the severity of the contest in which he had been engaged; and, as the fourth corps had not arrived, he determined to fall back, and concentrate his army upon Wavre; and he marched in the night after the action was over.
"This movement of the marshal's rendered necessary a corresponding one on my part; and I retired from the farm of Quatre Bras upon Gemappe, and thence upon Waterloo the next morning, the 17th, at ten o'clock.
"The enemy made no effort to pursue Marshal Blucher. On the contrary, a patrol which I sent to Sombref in the morning, found all quiet, and the enemy's videttes fell back as the patrol advanced. Neither did he attempt to molest our march to the rear, although made in the middle of the day, excepting the following, with a large body of cavalry brought from his right, the cavalry under the Earl of Uxbridge.
"This gave Lord Uxbridge an opportunity of charging them with the first Life-Guards, upon their debouche from the village of Gemappe, upon which occasion his lordship has declared himself to be well satisfied with that regiment.
"The position which I took up, in front of Waterloo, crossed the high roads from Charleroi and Nivelles, and has its right thrown back to a ravine near Merke Braine, which was occupied; and its left extended to a height above the hamlet of Ter-la-Haye, which was likewise occupied. In front of the right center, and near the Nivelles road, we occupied the house and garden of Hougoumont, which covered the return of that flank; and, in front of the left center, we occupied the farm of La Haye Sainte. By our left we communicated with Marshal Prince Blucher, at Wavre, through Ohain, and the marshal had promised me that, in case we should be attacked, he would support me with one or more corps, as might be necessary.
"The enemy collected his army, with the exception of the third corps, which had been sent to observe Marshal Blucher, on a range of heights in our front, in the course of the night of the 17th, and yesterday morning; and, at about ten o'clock, he commenced a furious attach upon our post at Hougoumont. I had occupied that post with a detachment from General Byng's brigade of Guards, which was in position in its rear; and it was for some time under the command of Lieutenant-colonel Macdonald, and afterwards of Colonel Home; and I am happy to add, that it was maintained throughout the day with the utmost gallantry by these brave troops, notwithstanding the repeated efforts of large bodies of the enemy to obtain possession of it.
"This attack upon the right of our centre was accompanied by a very heavy cannonade upon our whole line, which was destined to support the repeated attacks of cavalry and infantry occasionally mixed, but sometimes separate, which were made upon it. In one of these, the enemy carried the farm-house of La Haye Sainte, as the detachment of the light battalion of the legion which occupied it had expended all its ammunition, and the enemy occupied the only communication there was with them.
"The enemy repeatedly charged our infantry with his cavalry, and these attacks were uniformly unsuccessful, and they afforded opportunities to our cavalry to charge, in one of which, Lord E. Somerset's brigade, consisting of the Life-Guards, Royal Horse-Guards, and First Dragoon- Guards, highly distinguished themselves; as did that of Major-general Sir W. Ponsonby, having taken many prisoners and an eagle.
"These attacks were repeated till about seven in the evening, when the enemy made a desperate effort, with the cavalry and infantry, supported by the fire of artillery, to force our left centre near the farm of La Haye Sainte, which, after a severe contest, was defeated; and, having observed that the troops retired from the attack in great confusion, and that the march of General Bulow's corps by Frichermont upon Planchenoit and La Belle Alliance, had begun to take effect; and, as I could perceive the fire of his cannon, and as Marshal Prince Blucher had joined in person, with a corps of his army to the left of our line by Ohain, I determined to attack the enemy, and immediately advanced the whole line of infantry, supported by the cavalry and artillery. The attack succeeded in every point; the enemy was forced from his position on the heights, and fled in the utmost confusion, leaving behind him, as far as I could judge, one hundred and fifty pieces of cannon, with their ammunition, which fell into our hands.
"I continued the pursuit until long after dark, and then discontinued it, only on account of the fatigue of our troops, who had been engaged during twelve hours, and because I found myself on the same road with Marshal Blucher, who assured me of his intention to follow the enemy throughout the night; he has sent me word this morning, that he ad taken sixty pieces of cannon belonging to the imperial guard, and several carriages, baggage, &c, belonging to Buonaparte, in Gemappe.
"I propose to move, this morning, upon Nivelles, and not to discontinue my operations.
"Your lordship will observe, that such a desperate action could not be fought, and such advantages could not be gained, without great loss; and, I am sorry to add, that our's has been immense. In Lieutenant-general Sir Thomas Picton, his majesty has sustained the loss of an officer who has frequently distinguished himself in his service; and he fell, gloriously leading his division to a charge with bayonets, by which one of the most serious attacks made by the enemy of our position was defeated.
"The Earl of Uxbridge, after having successfully got through this arduous day, received a wound, by almost the last shot fired, which will, I am afraid, deprive his majesty for some time of his services.
"His Royal Highness the Prince of Orange distinguished himself by his gallantry and conduct till he received a wound from a musket-ball through the shoulder, which obliged him to quit the field.
"It give me the greatest satisfaction to assure your lordship, that the army never, upon any occasion, conducted itself better. The division of guards, under Lieutenant-general Cooke, who is severely wounded, Major-general Maitland, and Major-general Byng, set an example which was followed by all; and there is no officer, nor description of troops, that did not behave well.
"I must, however, particularly mention, for his royal highness's approbation, Lieutenant-general Sir H. Clinton; Major-general Adam; Lieutenant-general Charles Baron Alten, severely wounded; Major-general Sir Colin Halket, severely wounded; Colonel Ompteda; Colonel Mitchele, commanding a brigade of the fourth division; Major-generals Sir James Kempt and Sir Denis Pack; Major-general Lambert; Major-general Lord E. Somerset; Major-general Sir W. Ponsonby; Major-general Sir C. Grant, and Major-general Sir H. Vivian; Major-general Sir O. Vandeleur; Major-general Count Dornberg. I am also particularly indebted to General Lord Hill, for his assistance and conduct upon this, as upon all former occasions.
"The artillery and engineer departments were conducted much to my satisfaction by Colonel Sir G. Wood, and Colonel Smyth; and I had every reason to be satisfied with the conduct of the Adjutant- general Major-general Barnes, who was wounded, and of the Quarter-master-general, Colonel Delancy, who was killed by a cannon-shot in the middle of the action. This officer is a serious loss to his majesty's service, and to me at this moment. I was likewise much indebted to the assistance of Lieutenant-colonel Lord Fitzroy Somerset, who was severely wounded, and of the officers composing my personal staff, who have suffered severely in this action. Lieutenant-colonel the honourable Sir Alexander Gordon, who has died of his wounds, was a most promising officer, and is a serious loss to his majesty's service.
"General Kruse, of the Nassau service, likewise conducted himself much to my satisfaction, as did General Trip, commanding the heavy brigade of cavalry, and General Vanhope, commanding a brigade of infantry of the king of the Netherlands.
"General Pozzo di Borgo, General Baron Vincent, General Muffling, and General Alava, were in the field during the action, and rendered me every assistance in their power. Baron Vincent is wounded, but I hope not severely; and General Pozzo di Borgo received a contusion.
"I should not do justice to my feelings, or to Marshal Blucher and the Prussian army, if I did not attribute the successful result of this arduous day to the cordial and timely assistance received from them.
"The operation of General Bulow upon the enemy's flank, was a most decisive one, and, even if I had not found myself in a situation to make the attack which produced the final result, it would have forced the enemy to retire, if his attacks should have failed, and would have prevented him from taking advantage of them, if they should unfortuantely have succeeded.
"I send, with this despatch, two eagles, taken by the troops in this action, which Major Percy will have the honour of laying at the feet of his Royal Highness. I beg leave to recommend him to your lordship's protection.
"I have the honour, &c.