 Complete the following phrase:  After the withdrawal of the PolishLithuanian forces, the Knights started taking back their fortresses. By the end of October, only four Teutonic castles remained in Polish hands  border towns of Thorn Toruń, Nessau Nieszawa, Rehden Radzyń Chełmiński and Strasburg Brodnica. Jogaila raised a fresh army and dealt another defeat to the Knights in the 