Battle of Grand Coteau or Bayou Bourbeux, Louisiana. November 3, 1863. The Battle of Bayou Bourbeux also known as the Battle of Grand Coteau, Battle of Boggy Creek or the Battle of Carrion Crow Bayou (Carrion Crow is the Cajun French word for buzzard), which is present day Carencro Bayou, was fought in southwestern Louisiana west of the town of Grand Coteau, during the American Civil War. The engagement was between the forces of Confederate Brigadier General Thomas Green and Union Brigadier General Stephen G. Burbridge.