In the autumn of 1864, at the height of the American Civil War, the Confederate raider Shenandoah received orders to "seek out and utterly destroy" the whaling fleets of New England as part of an effort to bleed the Union of its economic strength -- an undertaking that met its greatest success when the raider fell upon a fleet of whalers working the waters near Alaska's Little Diomede Island and sank more than two dozen ships in a frenzy of destruction. Before...