Greetings: JGr. 102 was indeed on bf109D's in 1939 and early 1940, converting to Bf110's during Feb./March 1940. Losses sustained by this unit in the Polish Campaign can be found at
www.valka.cz . Hans Katzmann was one of JGr. 102's successful pilots in the Polish Campaign, with 3 claims. I had been unable to track down his fate until your post, so thank you for this information. Do you have names for any of the other crew lost on this date, or the crash at Straubling on 27.2.40? There are a few other pilots (ie.Uffz. Georg Schuch, Fw. Wolfgang Brachs) that I am trying to track down, so far without success. Cheers. Dean Wick.