Saxon Soldiers of Pirna garrison

[Speedy]

The only thing I know for sure about the pictures enclosed they have been taken in Pirna near Dresden. The unit numbers are not visible but the Pirna garrison consisted of 2. Field Artillery Regiment No. 28 (until 1913), 5. Field Artillery Regiment No. 64 and 1st Pioneers No. 12 (from 1913). Of course the soldiers could be from the nearby Dresden garrison as well. Maybe you can tell me more about the soldiers shown:

 

 

Picture number 3 could have been taken at the Graue Kaserne - home of FAR28