This mod creates a new outfit for the Imperial soldiers protecting General Tullius. They now wear Imperial heavy armor with the Imperial full helmet and carry Imperial heavy shields. They are renamed to "Imperial Honor Guard". Hadvar is given a version of the outfit without the helmet and shield and has had generic items in his inventory like a longbow and an iron shield replaced with Imperial versions, as he specifically mentions he was part of Tullius's guard during his conversation with Alvor.

And that's it. Mod is flagged as an esl, so your load order slots are safe.
Can be considered part of the same "suite" as The Jarl's Household Guard, The Redoran Council Guard, Jailors and Turnkeys, and Civil War Officer Corps.

Compatibility

This mod:

• edits 3 NPCs: Hadvar, GuardSolitudeImperialWarroomNight, and GuardSolitudeImperialCastleDour.
• creates 3 new leveled lists.
• creates 2 new outfits using those leveled lists.
  

And that is all. This mod can't cause black face bugs, except for Hadvar if you are using a mod that edits him without a patch.
For those who are unable to make their own patches there is a No Hadvar version available as an optional file.

Integration patch for Imperial Guard Centurion Armor SE by CSTCN is available here.


My Other Mods
If you like this one, perhaps check out:
Thalmor Use Elven The Thalmor use elven weapons at minimum.
Aranea of the Temple or Aranea of the Temple - SPID Dunmer priestess wears the robes of the dunmer priesthood.
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.
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.
Climate-Aware Stormcloaks Reintroduces the cut sleeved Stormcloak Cuirass by giving it to Stormcloaks in cold locations.
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.
Faction Specific Loot - Blades of Mephala Handcrafted overhaul of Morag Tong 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.