In the final winter of the Civil War, Amos Dundee, a cavalry officer, commands a diverse group of Army regulars, Confederate prisoners, and scouts on a perilous mission into Mexico to avenge the brutal Apache massacre of soldiers and civilians in New Mexico.

Major Dundee
A Union officer, driven by a sense of duty, forms a diverse team of soldiers to execute a daring and unauthorized mission against Apache raiders in Mexico, with the goal of safeguarding American territory.