In the vanilla game the Stormcloaks only use the short-sleeved version of their cuirass, but there is an unused long-sleeved version that remains in the game as cut content. This mod restores this content by creating versions of existing Stormcloak leveled item lists and outfits that use the sleeved cuirass. It then swaps out Stormcloaks in cold areas with new cold weather versions of themselves that make use of the new lists. These versions draw their Traits, Stats, Spells, AI Data, Ai Packages, Model/Animation, Base Data, Scripts, and Attack Data from the exact same template NPC as the originals do, so the only functional difference between the new NPCs should be that they wear long sleeves.

And that's it. Mod is flagged as an esl, so your load order slots are safe.

Compatibility

This mod:

• edits 1 armor addon: StormcloakCuirassSleevesAA so the Weapon Adjust value is consistent with the normal Stormcloak/Guard Cuirass values
• creates 5 new leveled item lists, which are copies of existing Stormcloak leveled item lists but with the cuirass swapped to the sleeved one.
• edits 1 outfit: GuardWindhelm to use the sleeved cuirass.
• creates 3 new outfits which are copies of existing Stormcloak outfits but using the sleeved cold weather leveled item lists.
• Edits 5 NPCs, the Stormcloak Occupiers in Morthal to make them use CASGuardHjaalmarchSonsCold as a template.
• creates 3 NPCs: CASCWSiegeSonsSoldierCold, CASCWFortSiegeSonsCold and CASGuardHjaalmarchSonsCold. These are the same as the vanilla versions, except they have been given the cold weather outfits.
• Swaps out CWSiegeSonsSoldier placements at Windhelm with CASCWSiegeSonsSoldierCold
• Swaps out CWFortSiegeSons placements at Fort Dunstad, Fort Kastav, Fort Neugrad, Fort Hraggstad, Fort Snowhawk, Dawnstar(I think unused in vanilla civil war), and Winterhold(I think unused in vanilla civil war) with CASCWFortSiegeSonsCold.
• Swaps out GuardHjaalmarchSons in Stonehills with CASGuardHjaalmarchSonsCold
  

And that is all. This mod shouldn't cause black face bugs.

Known Patches

Jailors and Turnkeys is compatible with a patch provided on its page.


My Other Mods
If you like this one, perhaps check out:
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Jenassa in Chitin  or Jenassa in Chitin - SPID To give our mercenary armor that suits her.
Irileth in Chitin puts Irileth in chitin armor.
Aela in Wolven puts Aela in the wolven armor of the Companions' Circle
Dunmeri Ghosts - Dunmeri Gear To make sure Barenziah's Crown was escorted by true dunmeri warriors.
Civil War F Off - No Season Unending Makes the Civil War, um, "fly" off.
Elementalist's Fletching If you'd like some elemental arrows in your life.
The Jarl's Household Guards To give the Jarl's personal guards a more unique feel.
Imperial Honor Guard Gives Tullius some proper protection.
Waymark - A Road Signs Mod Adds more signposts and road signs to Skyrim.
The Redoran Council Guard Gives the Councilor of Raven Rock's personal guards a more unique feel.
Necromancy is Taboo Upstanding members of society no longer sell spells from the reviled and feared school of Necromancy.
Stones of the Stars A Morrowind and Oblivion inspired Standing Stones overhaul.
Children of Nirn A Morrowind and Oblivion inspired Race overhaul.
Jailors and Turnkeys Differentiates the jail guards from the generic guards.
Civil War Officer Corps Adds Stormcloak and Imperial Officers to lead patrols.
Gold is Septim and Has Weight Gold is Septim and has a weight based on historical currency like a big nerd.
Faction Specific Loot - Eagles of Alinor Handcrafted overhaul of Thalmor loot pools.
Faction Specific Loot - Children of the All-Maker Handcrafted overhaul of Skaal item pools.
More Dangerous Enemy Poisons Enemy poisons last longer and are more dangerous.
Fletching - Craft Arrows Anywhere New power to craft arrows wherever you please.
College Ghosts - College Robes The College Ghosts in Labyrinthian now wear College robes.
Faction Specific Loot - Blades of Mephala Handcrafted overhaul of Morag Tong item pools.