Our German allies in Afghanistan are no doubt brave and well-meaning. But they are only a token force, and furthermore their leaders have nevertheless allowed them to do almost no fighting during the course of the war.
Now it seems that German forces consumed 90,000 bottles of wine and 1,700,000 liters of beer in Afghanistan alone. In a single year. (Most other countries' soldiers aren't allowed to consume alcohol in the war zone.)
Germany has only contributed 3,300 soldiers: so if they drink this much it may very well be that it's a good thing that they aren't doing more fighting.