As Randolph Bourne said when writing about World War I in 1918, war is the health of the state. As America's power has grown, so has its propensity for war. Regardless of the debates about the justness or morality of war, the numbers have shown peace to be the exception in America while war has been the rule, making this last century since the start of World War I undeniably a century of warfare.
Our military does not value the service of its transgender members enough to allow them to serve openly. And this causes a great deal of pain to those who having found their careers in the military as they must also hide their true identities while serving - as Chelsea Manning did... US transgender service members may be willing to take a bullet for their country - but the country is not willing to meet their medical needs.