In early September the Baron sent a strong patrol out to perform reconnaisance in force in the stronghold of Mokotow. They met little resistance. Now, on September 9th he has sent a much larger force to occupy it and open up a flank on Sielce. Now the Baron has over 200 men garrisoned there, ready to storm through the rubble and swarm over the western wall of Sielce.
Then, on September 10th, his garrison in Praga was recalled. 50 men from Kamionek followed a few days later. Indeed, the last of the harvest was being cut right now in Sielce. There was certainly a lot of food there for the taking.
Everyone knew the final battle for Warsaw would begin soon.