Knowlton, marching under cover of the woods, soon came upon the enemy's pickets, somewhere, it would appear, between Hogeland's and Apthorpe's houses on the Bloomingdale Road, more than a mile below the American lines. This was the encampment of the Light Infantry, and their Second and Third Battalions, supported by the Forty-second Highlanders, were immediately pushed forward to drive back this party of rebels who had dared to attack them on their own ground. Anticipating some such move, Knowlton had already posted his men behind a stone wall, and when the British advanced he met them with a vigorous fire. His men fired eight or nine rounds a piece with good effect, when the enemy threatened to turn his flanks, and he ordered a retreat, which was well conducted. In this brief encounter the Rangers lost about ten of their number, and believed that they inflicted much more than this loss upon the Infantry.[196] [Footnote 196: The Rangers were thus engaged in a distinct skirmish before the main action of the day. Washington wrote to Congress early on the 16th: "I have sent some reconnoitring parties to gain intelligence, if possible, of the disposition of the enemy." A letter in the _Connecticut Gazette_, reprinted in Mr. Jay's documents, and which was probably written by Captain Brown, says: "On Monday morning the General ordered us to go and take the enemy's advanced guard; accordingly we set out just before day and found where they were; at day-brake we were discovered by the enemy, who were 400 strong, and we were 120. They marched up within six rods of us and there formed to give us Battle, which we were ready for; and Colonel Knowlton gave orders to fire, which we did, and stood theirs till we perceived they were getting their flank-guards round us. After giving them eight rounds apiece the Colonel gave orders for retreating, which we performed very well, without the loss of a man while retreating, though we lost about 10 while in action." Judge Burnham says substantially the same: "Colonel Knowlton marched close to the enemy as they lay on one of the Harlem Heights, and discharged a few rounds, and then retreated over the hill out of sight of the enemy and concealed us behind a low stone wall. The Colonel marked a place about eight or ten rods from the wall, and charged us not to rise or fire a gun until the enemy reached that place. The British followed in solid column, and soon were on the ground designated when we gave them nine rounds and retreated.... Our number engaged was only about 120."]