Synchronisation is a cost-cutting mechanism indeed. But, the idea is: more efficiency, so more bang for our bucks.
Must Europe have 27 airforce headquarters? 27 different military attachés in Brazil? Five, or three or one, are less expensive. Get rid of the pencil pushers, and use the money for actual defense. Either by maintaining current defense levels, in which case defense capability goes up, or by maintaining current capability, in which case expenditure goes down.
More defense for our money:
http://en.wikipedia.org/wiki/Synchro..._Forces_Europe
Bookmarks