4 January 1919
Lieutenant Colonel Julian Stachiewicz becomes Chief of Staff at the Supreme Command
– Lieutenant Colonel Julian Stachiewicz, who arrived from Warsaw, assumed the obligations of Chief of Staff at the Supreme Command of insurgent armies.
– Second Lieutenant Mieczysław Paluch was removed from his post as Commander of the Guard and Security Service and relocated to the northern front.
– Insurgents took Barcin, a railway station in Janikowo near Kruszwica. The company from Opalenica took temporary control of the railway station in Zbąszyń; it was, however, forced to retreat under the pressure of the Germans.