Wayne's request for three brigades, some 1,300 men, was denied, and at 16:45 he crossed the bridge over Spotswood Middle Brook with just 400 troops of the Third Pennsylvania Brigade. The Pennsylvanians caught the 650–700 men of the lone Grenadier battalion in the process of withdrawing, giving the British scant time to form up and receive the attack. The Grenadiers were "losing men very fast", Clinton wrote later, before the 33rd Regiment of Foot arrived with 300–350 men to support them. The British pushed back, and the Pennsylvanian Brigade began to disintegrate as it retreated to Parsonage farm. The longest infantry battle of the day ended when the Continental artillery on Combs Hill stopped the British counter-attack in its tracks and forced the Grenadiers and infantry to withdraw.