I would be very interested in hearing what you find out in Staufen, though I believe the relevant documents are elsewhere (Freiburg? Müllheim?). It should be difficult to resolve such problems as to why units stationed farther away went into action rather than others closer to Staufen. As it is, for aircraft, Strasbourg is not really that much closer.
Your reference to Café Decker is cryptic and does not seem to address the topic.