Meanwhile, general Kutrzeba and his staff officers had suspected, even before the German invasion, that it would be the neighbouring Armies that would bear the German attack, and had developed plans at an offensive towards the south, to relieve Army Łódź. In the first week of the campaign, those plans, however, were rejected by the Polish commander-in-chief, Marshal Edward Rydz-Śmigły. By 8 September Kutrzeba had lost contact with Rydz-Śmigły, who had relocated his command center from Warsaw to Brest; due to these factors, Kutrzeba decided to go forward with his plan. His situation was dire, as German forces were close to surrounding his units: the German 8th Army had secured the southern bank of the Bzura river and the German 4th Army had secured the northern bank of Vistula, from Włocławek to Wyszogród, and its elements were attacking the rear of the Armies Pomorze and Poznań from the direction of Inowrocław and crossing the Vistula river near Płock.