In this compelling portrait of interracial activism, Mark A. Lause documents the efforts of radical followers of John Brown to construct a triracial portion of the Federal Army of the Frontier. Mobilized and inspired by the idea of a Union that would benefit all, black, Indian, and white soldiers fought side by side, achieving remarkable successes in the field. Against a backdrop of idealism, racism, greed, and the agonies and deprivations of combat,...