Just before heading out to find Corbeau, Rivers helps April up onto her wagon. A few minutes later we see her climb up again, on her own.
The NWMP did not wear bearskin hats as seen in the movie. They wore either a red-and-black pillbox type cap, or a large white hat in the style of a London bobby.
During a battle scene, at least two characters get shot in the forehead, move a bit before going down dead. A penetration through the brain matter would immediately stop the motor activity.
Throughout the movie the name "Metis" is pronounced "Mee-tiss." It is correctly pronounced "May-tee".