The Modoc War in 1872-73, near the Oregon border, was the sole Native American conflict in American history in which a full ranking general, Edward R.S. Canby, was killed. A lesser known casualty was …The Modoc War in 1872-73, near the Oregon border, was the sole Native American conflict in American history in which a full ranking general, Edward R.S. Canby, was killed. A lesser known casualty was …