Upon receiving reports of missing persons at Fort Spencer, a remote Army outpost on the Western frontier, Capt. John Boyd investigates. After arriving at his new post, Boyd and his regiment aid a wounded frontiersman who recounts a horrifying tale of a wagon train murdered by its supposed guide -- a vicious U.S. Army colonel gone rogue. Fearing the worst, the regiment heads out into the wilderness to verify the gruesome claims.

The story of Ulzana, an Apache chief who has reached a rapprochement with the local Mexican population and generously extends it to whites who travel through the territory. His people have become inured to the treacherous ways of the white man, however, and are now reliant on them for booze, 'relief flour' and beef steak.

A villainous cavalry officer is trying to force the owner of a hacienda to give him his land when a courageous settler comes to the rescue.

One of the most controversial conflicts in U.S. history, the Mexican-American War erupted as President James K. Polk sought to extend the borders of the nation to the Pacific, taking by force whatever territory stood in the way. This special, produced by The History Channel and hosted by Oscar de la Hoya, looks at the war from the perspective of both countries, and chronicles the fighting from its inception to its conclusion with the Treaty of Guadalupe Hidalgo.