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The besieged town in question is most probably Breslau, and the officer in question is most probably Karl Hanke, who was governor (Gauleiter) during the Siege of Breslau.
The English Wikipedia is a bit slim on this matter, however, the German articles, states that after the loss of the last air field, the defending general, Hermann Niehoff, ordered an airstrip to be constructed within the city of 300 by 1000 meters. The German article on the Siege of Breslau goes on, that the airstrip did not make a difference, and it was said, that the Gauleiter's plane was the only one that started from this air strip.
Sorry for the rather slim sources, however, there may be people with a deeper knowledge of the Siege of Breslau, who might be able to provide better sources for this specific episode, i.e. the landing strip being constructed by demolishing builings within the city.