1. Harrison enclosed copies of Arnold’s and Gates’s letters to Schuyler of 15 Oct. concerning the destruction of Arnold’s fleet and Schuyler’s second letter to GW of 16 Oct. which covered the copies of those letters that GW received on this date. The copies of Arnold’s and Gates’s letters that Harrison sent to Hancock are in DNA:PCC, item 152.

2. The following day Harrison wrote a brief letter to Hancock from Valentine’s Hill at Mile Square in present-day Yonkers, informing him that GW was “absent on a visit to the Several posts on the left of our Lines & at the White plains” (DNA:PCC, item 152). GW moved his headquarters from Harlem Heights to Valentine’s Hill on that date.

3. On the morning of 18 Oct. General Howe moved the major part of his army from Throg’s Neck to the Pell’s Point peninsula (now part of Pelham Bay Park) located about three miles to the north up Long Island Sound. An advanced force composed of grenadiers and light infantry embarked on flatboats at daybreak and moved up Eastchester Bay to the mouth of the Hutchinson River, where about eight o’clock in the morning they landed on the western shore of Pell’s Point peninsula. The advanced force was soon joined there by the main body of Howe’s army, which marched north up Throg’s Neck and ferried across the mouth of the Hutchinson River using the advanced force’s flatboats. The British then marched up Pell’s Point peninsula, and by nightfall they occupied a front about two miles in length “with the left upon a creek opposite to East Chester and the right near to [New] Rochelle” (William Howe to George Germain, 30 Nov., in Davies, Documents of the American Revolution description begins K. G. Davies, ed. Documents of the American Revolution, 1770–1783; (Colonial Office Series). 21 vols. Shannon and Dublin, 1972–81. description ends , 12:258–64; see also Lydenberg, Robertson Diaries description begins Harry Miller Lydenberg, ed. Archibald Robertson, Lieutenant-General Royal Engineers: His Diaries and Sketches in America, 1762–1780. New York, 1930. description ends , 103–4, and Baurmeister, Revolution in America, 59–60). Howe’s main army remained in that position until the morning of 21 Oct. when it again moved north toward White Plains.

On the march north from the landing place at the mouth of the Hutchinson River, the British advanced guard encountered opposition from Col. John Glover’s brigade, which consisted of about seven hundred and fifty men. Concealed in woods and behind stone fences, the Americans harassed the British column, inflicting some casualties before being forced to retreat by the enemy’s greatly superior numbers. For accounts of this skirmishing, which occurred during the late morning and early afternoon of 18 Oct., see particularly Extract of a Letter from Fort Lee, 19 Oct., in Force, American Archives description begins Peter Force, ed. American Archives. 9 vols. Washington, D.C., 1837–53. description ends , 5th ser., 2:1130–31; Extract of a Letter from Colonel Glover, 22 Oct., ibid., 1188–89; Extract of a Letter from a Gentleman in the Army, 1 Nov., ibid., 3:471–74; Wilson, Heath’s Memoirs description begins Rufus Rockwell Wilson, ed. Heath’s Memoirs of the American War. 1798. Reprint. New York, 1904. description ends , 83; Lydenberg, Robertson Diaries description begins Harry Miller Lydenberg, ed. Archibald Robertson, Lieutenant-General Royal Engineers: His Diaries and Sketches in America, 1762–1780. New York, 1930. description ends , 103–4; and William Howe to George Germain, 30 Nov., in Davies, Documents of the American Revolution description begins K. G. Davies, ed. Documents of the American Revolution, 1770–1783; (Colonial Office Series). 21 vols. Shannon and Dublin, 1972–81. description ends , 12:258–64. Glover says that he “had eight men killed and thirteen wounded, among whom was Colonel [William] Shepard” (Extract of a Letter from Colonel Glover, 22 Oct., in Force, American Archives description begins Peter Force, ed. American Archives. 9 vols. Washington, D.C., 1837–53. description ends , 5th ser., 2:1188–89). William Howe says that on his side “three soldiers were killed and about twenty wounded.” In addition, Lt. Col. Thomas Musgrave of the 1st Battalion of light infantry and Capt. William Glanville Evelyn of the 4th Regiment were wounded, the latter fatally (Howe to George Germain, 30 Nov., in Davies, Documents of the American Revolution description begins K. G. Davies, ed. Documents of the American Revolution, 1770–1783; (Colonial Office Series). 21 vols. Shannon and Dublin, 1972–81. description ends , 12:258–64). For GW’s praise of Glover’s men for this action, see General Orders, 21 October.