After World War II ended in Europe, the Third Reich has fallen. Germany was fall into chaos during Soviet occupied eastern portion of Germany. After that, the region of the Germany has been separated into East Germany which called "German Democratic Republic" and West Germany as the result of "Potsdam Agreement". However, in 1990 unification of East and West Germany called "German Reunification" which is officially ended the conflict between German people. This mod aim to create the fictional war between East Germany and West Germany during Cold War.
The P.R.T.L.(Pantser Rups Tegen Luchtdoelen) is the Dutch version of the German self-propelled anti-aircraft gun: 'Flugabwehrkanonenpanzer Gepard'. The P.R.T.L. was taken in use by the Dutch military since the 1970s, till they were sold to jordan in 2013(Thanks Nederlandse Overheid).
This SPAA system was really similar with Gepard but the only different that you can notice is only different radar type.