At the end of the summer the fortress was housing the march battalions of 82nd and 35th infantry regiments and elements of various smaller units. Moreover, a large number of newly mobilised reservists started to arrive at the fortress, awaiting forward deployment to their units. From these units General Konstanty Plisowski organized a force of roughly three infantry battalions, aided by an engineering battalion, several batteries of artillery and two companies of old FT-17 tanks used for training, Nos. 112 and 113.