Hi Roland,
I think it's army but I'm not sure. The size of the cubes is actually about 0,5 cm. We did a little test on the local range and found this target to be so very small at 50 metres that testfiring must have been done using some sort of support construction. The document is DIN A/4 in size (it figures, as that is a German standard

).
Before anyone screams murder, the testfiring was done on a cleaned-up copy of the original.