Mouton then called in his outlying detachments, including the La Fourche regiment, 500 strong, 300 men of the 33d Louisiana, and the regiments of Saint Charles and St. John Baptist, burned the railway station of Terre Bonne and the bridges at Thibodeaux, La Fourche Crossing, Terre Bonne, Des Allemands, and Bayou Boeuf, and evacuated the district. By the 30th, every thing was safely across Berwick Bay. For this escape, he was indebted to an opportune gale that compelled Buchanan's gunboats to lie to in Caillou Bay on their way to Berwick Bay, to cut off the retreat. Mouton's report accounts for 5 killed, 8 wounded, and 186 missing; in all 199. Among the killed was Colonel G. P. McPheeters of the Crescent regiment.
Weitzel followed to Thibodeaux, and went into camp beyond the town. He claims to have taken 208 prisoners and one gun, and states his own losses as 18 killed, and 74 wounded, agreeing with the nominal lists, which also contain the names of 5 missing, thus bringing the total casualties to 97.
Arriving off Brashear a day too late, Buchanan was partly consoled by capturing the Confederate gunboat _Seger_. On the 4th and 5th of November he made a reconnoissance fourteen miles up the Teche with his own boat, the _Calhoun_, and the _Estrella, Kinsman, Saint Mary's_, and _Diana_, and meeting a portion of Mouton's forces and the Confederate gunboat _J. A. Cotton_, received and inflicted some damage and slight losses, yet with no material result.
Simultaneously with Weitzel's movement on La Fourche, Butler pushed the 8th Vermont and the newly organized 1st Louisiana Native Guards forward from Algiers along the Opelousas Railway, to act in conjunction with Weitzel and to open the railway as they advanced. Weitzel had already turned the enemy out of his position, but the task committed to Thomas was slow and hard, for all the bridges and many culverts had to be rebuilt, and from long disuse of the line the rank grass, that in Louisiana springs up so freely in every untrodden spot above water, had grown so tall and thick and strongly matted that the troops had to pull it up by the roots before the locomotive could pass.
So ended operations in Louisiana for the year. Until the following spring, Taylor continued to occupy the Teche region, while Weitzel rested quietly in La Fourche, with his headquarters at Thibodeaux and his troops so disposed as to cover and hold the country without losing touch. On the 9th of November, the whole of Louisiana lying west of the Mississippi, except the delta parishes of Plaquemine and Terre Bonne, was constituted a military district to be known as the District of La Fourche, and Weitzel was assigned to the command.