Chronology of World War II
Poles counterattack along Bzura
Saturday, September 9, 1939 www.onwar.com
In Poland... The German 4th Panzer Division, part of the German 16th Panzer Corps, mounts an attack in the southeast suburbs of Warsaw but is beaten off. The German command believes that almost all the Polish forces have retired east of the Vistula River but in fact fresh units from the Poznan Army and part of the Pomorze Army have joined together around Kutno. About 10 Polish divisions are assembling in this area under the command of General Tadeusz Kutrzeba. They now begin a counterattack over the Bzura River against the German 8th Army. The battles which follow will be the hardest fought of the campaign. Initially, the Poles gain some success.

On the Western Front... French troops advance into the Warndt Forest across the German border and occupy 3 square miles of German territory. The action is widely viewed as having more propaganda than military purpose since the region, referred to by the French as "occupied Germany," is deserted, heavily mined and booby-trapped.

In France... The last of 13 RAF squadrons arrives in move begun on September 4th to strengthen the British Expeditionary Force.

From Moscow... Molotov prematurely congratulates the Germany for the "entry of German troops into Warsaw" and promises Soviet intervention "within the next few days."

From Berlin... Goring threatens reprisals against Britain if the RAF bombs Germany and boasts that Berlin will never be subjected to enemy aerial attack. He says that "the Polish Army will never emerge again from the German embrace." Ribbentrop invites the Soviets to advance to their new common frontier, the Narew, Vistula and San rivers (the Bug and Pissa would eventually replace the Vistula to avoid a divided Warsaw.


This chronological study of the Second World War provides a comprehensive day-by-day account of WWII. While focused on the military history of the war, with an emphasis on the battles and campaigns fought, the timeline includes social and political history as well. Some Holocaust related events are already recorded and additional updates are pending. In so far as possible, the images included in this presentation are pictures from the given days. Additional information and images are welcome through the feedback form found on the index.