German soldiers would not be using civilian money. They used special banknotes issued to all members of the Wehrmacht. 
The war-time pay stretched from ~RM100 for Private (Schütze) to ~RM1700 for a General (some allowances came on top). Soldat could have an evening full of joy and fun for ~5RM.
There's a number of banknotes available. RM (Reichsmark) banknotes are printed on both sides, while Reichspfennig are printed on one side only. 
 
Prices for reference:
Mercedes 540K - RM 42,000
Volkswagen - RM 900
Fountain Pen - RM 10
Wrist watch - RM 10
Portable typewriter (Olympia) - RM 127.5
Pack of cigarettes (12pcs) - RM 3.33 
1kg of bread - 35 Pf 
1kg of pork - RM 1.60
0.25kg of butter - 60 Pf
Bottle of beer - 25 Pf (in a bar)
Shot of cognac - 20 Pf (in a bar)
For Adolf Hitler's salary was RM 1500 a month. Skilled worker in heavy industry earned ~RM 180 per month.