First if you take people out of the economy cuz their serving there will be more jobs open because the public demand would not change.
In order to clothe, feed, train etc the additional soldiers the fed govt would need to spend money which would help spur the economy.
While in the army people...
Take a look at psychology sites and look for items about how people create "LEARNED BEHAVIORS". It basically says that if you see someone do act x, you will repeat the act. So if you see someone shoot a cop you will first think its ok to do and then you may repeat the behavior and shoot a cop on...
The five as with every dollar denomiation shows that were a civilization because we aren't using the barter system.
It shows us as a civ because there you can longer walk into a bank and give them a five and get five bux worth of gold which about 100 years ago you were able to do
It shows us...