Earlier quoted context omitted.
The US and UK military are usually stationed in somewhat small cities and are a very important part of the economy in these areas. Most people don't care about the fact that they are still here in Germany and those that do care are happy about the income they provide. Everytime they leave somewhere it's usually a source of great concern and not at all something to celebrate.
While nobody celebrates, i think you are overstating the relevance. The troops live in their own quarters, hire their own contractors and shop in their own tax-free shops. Maybe they are using caps, but the impact on the local economy seems minimal.
- Bavaria in fear for five US bases
http://www.merkur-online.de/aktuelles/politik/bayern-bangt-f...
- Effects for Bamberg: withdrawal of US troops brings about employment worries
http://www.radio-plassenburg.de/default.aspx?ID=7054&showNew...
(18,000 employees and a giant market in the surrounding areas are affected at the biggest US base in Grafenwöhr - after all, 15,000 family members of the troops live in the communities around the base.)
- Mannheim expects loss of 6 million Euro after pull-out of troops
http://www.t-online.de/regionales/id_42073640/mannheim-rechn...