Red Dead Redemption Episode 18: The Great Mexican Train Robbery

"John Marston meets with a nervous Luisa Fortuna to discuss the future of the revolution. Luisa's father has been killed for treason, and she wants Marston to help fight in the revolution. Colonel Agustin Allende is sending reinforcements and supplies to fight against the rebels, and Abraham Reyes has asked that John stop them."
"John Marston goes to meet with Abraham Reyes in Agave Viejo. Reyes asks to Marston to help steal a supply train from the Mexican Army."