France, Home Front
Identity cards are made mandatory.[
]Poland
(8th?)The German 4th Panzer Div mounts the first attack on Warsaw from the southeast but is beaten back after about three hours of fighting losing 60 tanks. The German command believes that almost all the Polish forces have retired east of the Vistula but in fact unfought units from the Poznan Army and part of the Pomorze Group have joined together around Kutno. About 10 Polish divisions are assembled in this area under the command of Gen Tadeusz Kutrzeba. They now begin a counterattack over the Bzura against the German 8th Army. Initially, the Poles are successful and inflict heavy casualties on the German forces due to the element of surprise. They even manage to push the Germans back in several areas but are unable to maintain momentum due to low food and ammunition supplies. The battles fought here will be the hardest fought of the campaign.[
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]Western Front
The first units of the BEF (British Expeditionary Force) under Gen Lord John Gort leave for France.[
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