Bonanza - Season 4 - Eps 10: The Deadly Ones
The Ponderosa becomes a war zone when it is invaded by a detachment of Mexican mercenaries under General Diaz. The general is furious when one of his men, Forsythe, disobeys his orders to get a hostage peacefully, and instead shoots Little Joe in the back. Diaz forces Ben to lead his men over the back roads of the Ponderosa, so they can ambush a gold train led by Emperor Maximilian's men.
About Bonanza

Title: Bonanza
First Air Date: 1959-09-12
Last Air Date: 1973-01-16
Status: Ended
Rating: 7.516/10 (from 441 votes)
Language: EN
Seasons: 14
Total Episodes: 431
Network: NBC
Genres: Western, Action & Adventure, Drama, Family
Production Companies: NBC, NBC Studios
Synopsis
The High-Sierra adventures of Ben Cartwright and his sons as they run and defend their ranch while helping the surrounding community.
Cast

Lorne Greene
Ben Cartwright

Michael Landon
Joe Cartwright

David Canary
Candy Canaday

Tim Matheson
Griff King

Mitch Vogel
Jamie Hunter Cartwright