Battle of Red Bank - Aftermath

Aftermath

The Hessian army reported casualties of 377 killed and wounded with 20 missing or captured, while the Americans reported their losses at 14 killed and 27 wounded. Frustrated by the failure to capture Fort Mercer, Howe ordered the Hessian regiments withdrawn from New Jersey while he made plans to attack Fort Mifflin by a massive artillery bombardment. By early November the British artillery batteries on Providence Island were complete, and a number of warships were available in support. On November 10, 1777, the British opened a full-scale bombardment of Fort Mifflin which lasted for five days. Six British warships, with two small floating batteries, the Vigilant and the Fury, also joined the bombardment to rake Fort Mifflin at close range. After five days, on November 15, the commanding officer of Fort Mifflin, Major Simeon Thayer, with 250 reported casualties among his 400 men and with ammunition running low, abandoned the fort that evening, leaving the American flag flying, and evacuated his men to Fort Mercer. The next morning a small party of British troops landed unopposed at deserted Fort Mifflin, hauled down the American flag, and ran up the British Union Jack atop the ruined fort. The bombardment of Fort Mifflin cost the British only a reported 13 sailors and troops killed with 24 wounded, with some damage done to some of their warships and land batteries.

Howe then sent Lord Cornwallis with 5,000 men to attack Fort Mercer, landing them by ferry at Billingsport, three miles (5 km) to the south. Rather than let the garrison be captured in an overwhelming British assault, Colonel Christopher Greene decided to abandon the fort on November 20, leaving the British to occupy it the following day.

George Washington's scheme of starving the British out of Philadelphia had failed with the loss of the two forts. His only hope now was to lure the British out of Philadelphia into another major land battle at his camp at nearby White Marsh. Although Howe did sortie from the city to launch a feint at the American camp in early December, he felt the American position was too strong and retired to Philadelphia for the rest of the winter. Washington then moved his army to Valley Forge for the winter.