There are
43 single player mods for Men of War to date
Most of these are single player mission mods which add new missions and maps for you to play.
Updated;
Here is the link to the singleplayer mods list at Digitalmindsoft forums -
MOW singleplayer mod collections
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Another must have mod I like is the MoW - Ultimate Sound Mod.
This mod greatly improves the sounds of Men of War and........ also Red Tide.
Here is the link for this sound mod;
[MoW] Ultimate Sound Pack addon
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If you want to use this sound mod with "Red Tide" there are special instructions because "Red Tide" cannot use a mod folder.
The instructions for "Red Tide" are here 1C - Red Tide - forums - sound mod )