The Shawnees launched their final assault on September 17, again trying to set fire to the fort. They were beaten back, and a heavy rain helped to put out the fires. The Shawnees lost more men killed in this attack than on all previous days. The next day, they gradually broke off the siege. They separated into scattered war parties and raided other settlements, inflicting far more damage in their traditional mode of warfare than they had done during the siege.