Although most famously active during the Vietnam War, the United States has harbored, if not effective, then loud, antiwar sentiment since its early national period. Both inside and outside the government proper, these voices have expressed disdain for both the target war and its methods. There has never been a war in the United States that did not have its internal enemies, although the support against the war often fluctuated based on battlefield successes, casualty counts, and longevity. The movements against the Mexican-American War, Civil War, First World War, and Vietnam War are perhaps the most famous, but there were many more, including the current War on Terror. Even World War II, which has since been remembered as a moment of national unity in support ...