Re: Books about Luftwaffe and air war by Olaf Gröhler
Warsaw was a target of heavy attack on the previous day and a lot of leaflets were then droped. On 11.09 Heeresgruppe Sued called for immediate air support due to unexpected attack of Polish army (Battle of Bzura). This, combined with Hitler's visit on the front, may have resulted with cancellation of the order.
By the way, why not to ask Groehler himself?
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