War of 1812 Mod is a Multiplayer mod for Napoleonic Wars a DLC for Mount and Blade Warband.
Those old screenshots are very well old. Here is a current preview instead. 1st U.S. Infantry Regiment Ranker. An example of the early-late war uniforms feature of the mod. This screenshot was taken with the 'Use High-contrast Tonemap' ticked to be on and with Low HDR mode. Under the in-game Options menu under the Video Options tab.
Notice his Tombstone shako is from the late war period of 1814-1815. The uniform regulations changed the torso pattern from 1812. The pants are white rolled in late war configuration. Finally, his Charleville musket has the bayonet fixed now. In the background is the map of Chippewa in-game.