Tennessee Gentleman, if every soldier takes that oath so seriously, why did the army uphold Lincoln's declaration of martial law and suspension of Habeus Corpus during the Civil War? Why did the military carry out the interrment of Japanese Americans during WWII? As you've already pointed out, both of these acts were tyrannical and unconstitutional, yet the military carried them out anyway. While the oath is definately a good thing, at the end of the day it's only as good as the person taking it and thus is not enough to prevent tyranny in and of itself. Therefore, the responsibility for preventing one branch of the government from seizing power over the other two falls ultimately upon the people. The Bill of Rights ensures that the people are able to prevent such tyranny by ensuring that the balance of power stays intact and the balance of power ensures that the people cannot be stripped of their rights without their consent. Each institution ensures the survival of the other so long as it is the will of the people.
Smith, and Wesson, and Me. -H. Callahan
Well waddaya know, one buwwet weft! -E. Fudd
All bad precedents begin as justifiable measures. -J. Caesar