Un chariot dans l'Ouest (A Carriage in the West) is the first in Les Tuniques Bleues comic series by Louis Salvérius and Raoul Cauvin.

A patrol of Fort Bow is surprised when a messenger of the Union pursued by several Comanche Indians appears.

They need urgent reinforcements, and the general intends to send them a cart full of ammunition.

Chesterfield, who has lied to the general's daughter, Amelia, is thus appointed to accomplish this dangerous mission, since it will be necessary to cross the enemy lines.

Accompanied by Blutch, Tripps and Bryan, the garrison rush to Fort Defiance, unaware that their adventures are far from over.