I can certainly try, I actually wrote something like this in a PM the other day, wish I had saved it first! If you give me a couple days I will write something up in the beginning post
Quick version: Weapons and armour I=Infantry, M=Missile C=Cavalry
Rhodok: I=Spear and shield M=Crossbow C=really weak
Swadia: I=Not sure never use them! M=Crossbow C=Rock hard!!!
Khergit: I=pff what is infantry M=you mean you don't have a horse?!? C=Best Missile Cav(I think) Good heavy Cav
Vaegir: I=Axes Axes AXES! M=Solid Bowmen C= Heavy Cav AXES!!
Nord: I=shields and even More AXES (also throwing axes) M=Average Bowmen C=you expect me to get on that thing?
Saranid: I=Mostly light weapons and armour except top tier, also use javelins M=good top tier bowmen C= Good heavy Cav
Zerrikania: PRETTY COLOURS! I=light shield and weapons top tier BIG AXE!! M=Good short bow C=good missile cav, medium cav, ok heavy Cav, lots of blunt weapons (I think)
Villian: I=Board shields and swords M=Excellent Long Bowmen C=Light Cav
Aden: I=pretty rubbish (I think) M=pretty poor bowmen (I think) C=Light, Med, Hvy Cav! Ow it hurts!!!
Antaria: I=Heavy Armour, Big 2H Sword. M:Javelins and shields C= Med Cav, Javelins (I think)
Marina: I= Halberds, decent armour at top tiers. M=Crossbows, Board Shields, Swords C=Light Crossbow Cav (My personal favourite nation)
Legion: I=Shields and stabbies, javelins (i think) M=Crossbows and shileds C=Good Cav available early in the troop tree
I think that is everything. To be honest I don't use alot of the units all that often. My layout is.
I=Marina, Antarian (started to adopt Villian for shields) M=Marina and Villian C=Aden, Swadian, Legion (quick to get) and Khergits for Missile Cav.