The service in which I have been employed since the departure of Captain Balfour with advice of the reduction of New York, would not allow of an earlier time to send an account to your Lordship of the progress made from that period.
The very strong positions the enemy had taken on this island and fortified with incredible labour determined me to get upon their principal communication with Connecticut, with a view of forcing them to quit the strongholds in the neighborhood of King's Bridge, and if possible bring them to action. All previous arrangements having been made, the army embarked on the 12th of October, in flat boats and other craft, and passing through the dangerous navigation of Hell Gate in a very thick fog, landed on Frog's Neck, near the town of West Chester, about nine in the morning, the Carysfort being placed to cover the descent. The presence of Lord Howe, the activity of Commodore Hotham, most of the Captains of the fleet, and of the navy officers in general, were infinitely conducive to the King's service in this difficult movement; only one artillery boat was overset, having three six-pounders on board, which were lost, and three men drowned.
Lieutenant-General Earl Percy remained with two brigades of British and one of the Hessians in the lines near Haerlem, to cover New York.
The army remained in this situation until the stores and provisions could be brought up, and three battalions of Hessians drawn from Staten Island, which, together with some bad weather intervening, caused a delay of five days. On the 18th several corps re-embarked in flatboats, and passing round Frog's Neck, landed on Pell's Point at the mouth of Hutchinson's River; after which the main body crossed the mouth of that river to the same place, advanced immediately and laid that night upon their arms, with the left upon a creek opposite to East Chester, and the right near to New Rochelle.
On the march to this ground, a skirmish ensued with a small party of the enemy posted to defend a narrow causeway, who were pursued for a mile, when a considerable body appearing in front, behind stone walls and in woods, some companies of light infantry and a part of the chasseurs were detached to dislodge them, which they did effectually; Lieutenant-Colonel Musgrave commanding the first battalion of light infantry, and Captain Evelyn of the Fourth regiment, were both wounded; the latter is since dead, and much to be regretted as a gallant officer; but Lieutenant-Colonel Musgrave is in a fair way of recovery; three soldiers were killed and twenty wounded; the enemy's loss upon this occasion was a Lieutenant-Colonel killed, a Major wounded, and about ninety men killed and wounded.[1]
The part of the Sixteenth Light Dragoons that arrived with Lieutenant-Colonel Harcourt on the third instant (one transport being still missing) and the whole of the Seventeenth Light Dragoons, joined the army on the 20th. On the 21st the right and centre of the army moved to a position about two miles to the northward of Rochelle, on the road to the White Plains, leaving Lieutenant-General Heister, with two brigades of Hessians and one of British, to occupy the former ground. Lieutenant-Colonel Rogers,[2] with his corps of Rangers was detached to take possession of Mamaroneck, where the carelessness of his centries exposed him to a surprize from a large body of the enemy, by which he lost a few men killed or taken; nevertheless, by a spirited exertion he obliged them to retreat, leaving behind them some prisoners and several killed and wounded.
The sixth brigade, commanded by Brigadier Agnew, was moved the 22d to sustain the post of Mamaroneck. On the same day Lieutenant-General Knyphausen, with the second division of Hessians and regiment of Waldeckers, having arrived the 18th at New York, landed at Rochelle, was ordered to remain there to cover the disembarkation of the stores and provisions. Upon the movement of the army to Frog's Neck the enemy detached a corps to White Plains, and quitted their position about King's Bridge with some precipitation, leaving two thousand men for the defence of Fort Washington, extending their force behind the Bronx, from Valentine's Hill to White Plains, in detached camps every where entrenched. Their left by this means covering an upper communication with Connecticut, as well as the road along the North River, it was judged expedient to move to White Plains and endeavour to bring them to action.
Lieutenant-General Heister, with his corps, having orders to join on the march, the army moved in two columns on the the 25th, and took a position with the Bronx in front, the right of the line being at the distance of four miles from the White Plains; upon which the rebels immediately quitted their detached camps between King's Bridge and White Plains, assembling their whole force at the latter place, behind entrenchments that had been thrown up by the advanced corps. The army marched by the right in two columns toward White Plains, early on the 28th, Lieutenant-General Clinton leading the right and Lieutenant-General Heister the left column. Before noon all the enemy's advanced parties were drove back to their works by the light infantry and chasseurs, and the army formed with the right upon the road from Mamaroneck to the White Plains about a mile from the centre of their lines; and the left to the Bronx, near the same distance from the right flank of their entrenchments. A corps of the enemy was formed on a commanding ground, separated from the right flank of their entrenchments by the Bronx, which also, by changing its course nearly at right angles, separated this corps from the left of the King's army. Colonel Raille[3] who commanded a brigade of Hessians on the left, observing this position of the enemy and seeing a height on the other side of the Bronx unoccupied by them, from which their flank might be galled, took possession of it with great alacrity, to the approbation of Lieutenant-General Heister, who was acquainted with this movement by Sir William Erskine. Upon viewing the situation, orders were given for a battalion of Hessians to pass the Bronx and attack this detached corps, supported by the second brigade of British, under the command of Brigadier-General Leslie, and the Hessian grenadiers sent from the right, commanded by Colonel Donop; giving directions at the same time for Colonel Raille to charge the enemy's flank as the Hessian battalion advanced to them in front; but there being some difficulty in passing the Bronx the 28th and 35th regiments, who were the first to support, passed it in a place most practicable and formed on the opposite side, though under the enemy's fire, with the greatest steadiness; ascended the steep hill in defiance to all opposition, and rushing on the enemy, routed and drove them back from their works. These two battalions were closely supported by the 5th and 49th regiments, who showed the same zeal to distinguish themselves; the Hessian grenadiers also coming up and passing the Bronx, ascended the height with the greatest alacrity and in the best order.
This material post being gained the Hessian grenadiers were ordered forward upon the heights, within cannon-shot of the entrenchments, the Bronx, from its winding course, being still between them and the enemy's right flank; the second brigade of British formed in the rear of the Hessian grenadiers, and the two brigades of Hessians on the left of the 2d brigade, with their left upon the road leading from Tarrytown to White Plains.
The right and centre of the army did not remove from their ground. In this position the troops lay upon their arms that night, and with very little alteration encamped the next day. The officers and men of the British and Hessian artillery deserve much commendation for their active services on this occasion. The killed, wounded and prisoners taken from the enemy during the course of this day, is said to be not less than 250—the loss of his Majesty's troops and allies was small, as your Lordship will observe by the general return, considering the strength of the ground from whence the enemy was forced; though the loss of Lieutenant-Colonel Carr, of the 35th regiment, who died the next day of his wounds, is much to be lamented.