Yet another newbie reporting in

I plan on making my first dio... nothing too ambitious, maybe 12" x 12", involving just a couple of AFV and a few troops.
I was thinking about basing my diorama near St. Mere Eglise on the morning of June 6th 1944, with a mixed unit of 82nd and 101st Airborne moving into position to take out a German sd.Kfz 251
Does anyone have any info on which german units were in the area at the time ? From what research I've done, the Sturmpioneer unit for which I have the halftrack (the DML 3 in 1 model which is great) were deployed in Normandy, though I'm not sure if there were in Mere. Eglise, but I've also read that it was the 234 Infantry and they were in poor physical condition ?
I'm not sure. I want to make an accurate diorama without ruining the fun.
Any input you guys could give me would be appreciated.