Message from OKW HQ:

Date: September 17, 1939

Situation Report: Polish forces have retreated in good order to the Vistula River. There they have set up a defense perimeter in the hopes of stopping our drive on Warsaw. 

Operational Orders: Force a bridgehead over the Vistula, and consolidate the area on the far bank of the river. The bulk of our forces will follow up your attack with a concerted drive on the Polish Capitol.
