Power Struggle

In class we brought up the question of whether or not the military is democratic. A democracy is rooted in the people of the democracy. Majority rules. The voice of the people is heard and considered by the supreme power. In the military, this is certainly not the case. Soldiers are taught blind discipline and obedience. If an order is given, it is to be completed promptly and without hesitation or question. In the military, the people are tools of the supreme power. Their voice is the echo of the supreme power.

So why is this system supported by democracy? Is there ever a cause or a reason that trumps our democratic values? Apparently so, since we as a country go to war all the time.  Maybe I could argue that the military is a separate entity from the government that can make its own rules. But the military represents and defends our country during a time of war. Why would the military defend a government that embodies all the equality and freedom that it rejects?