From the old house books. 3025.
6th Marik Militia Mech Weight: Assault., 20th Marik Militia Mech Weight:Assault,
1st Sword of Light has one assault battalion in it also in night actions 2nd Sword of Light has one assault battalion likes open set actions
7th Sword of Light also has one assault battalion likes city fighting, 8th Sword of light has two assault battalions no specialty.15th Dieron Regulars is assault Regiment also no specialty,10th Pesht Regulars assault regiment no specialty.
11th Avalon could have a Battalion of assault mechs, Assault Guards let the name speak for it's self,33rd Avalon Hussars have extra battalion of assault mechs, 6th Syrtis Fusiliers, 6th Crucis Lancers, 3rd NAIS Cadet Cadre is mixed with heavy and assault mechs ,Miller's Marauder heavy/assault 2 battalions, Team Banzai light/assault one regiment, Illician Lancers Light/Assault 4 regiments, 12th Vegan Rangers Heavy/Assault 4 regiments, Lexington Combat Group light/assault 3 regiments, The Fighting Urakhai heavy/assault 3 regiments, The Crater-Cobras Medium/Assault 2 Regiments.
This is what I got from 3025. I do hope this will help.