In the battle of Kutno on Nov. 16 the resistance of the Russian I. Army was broken, and it withdrew to a sort of bridgehead position S. of Plock.
Meanwhile in the latter half of November the battle of Cracow was being fought N. of Cracow and E. of Czenstochowa.
At II A.M. the battle, raging with the same intensity along the whole front, and particularly on the S. wing, had reached its climax, and by the afternoon the crisis seemed to have been overcome.
In September 1939 joined the army as an officer and was nominated a battalion commander in the Poznań Army, which he led in the September defense campaign.
Between 9-20 September 1939, during the BzuraRiverbattle near the region of Łęczyca-Kutno-Łowicz-Sochaczew, Lt. Roman Wójciak fought with his troopers until the battalion was decimated and surrounded by squadrons of the German 8th army.
After the initial success in the first phase of the battle on the 16th and 17th of September 1939, Polish forces were surrounded by the Germans and then defeated.