tone, here's a revised roster based on Mulatto's comments. I've removed the Morini skirmisher, the armored swordsmen, and the Remi cavalry, to consolidate a bit. Added the Belgae Axemen.
We also want to add the clubmen levy unit that we gave the Arverni.
Also, we might consider splitting the Caledonians into 2 units, a light inf. and a skirmisher. But given that this is such a remote area, that might be overkill.
Belgic Slingers
[rating=2; sling, dagger, no armor]
Slingers were common among the Belgae, so this is their main missile unit. Like most Belgae, they are good ambushers and have excellent stamina. Good morale and fast moving, but poor discipline. Can swim. These men would wear simple clothing with muted colors.
Note: The Arverni slinger could do for this unit. Keep the hair long, maybe take the shield away, and give this unit a small cloak/cape of animal skin if thats possible. Perhaps have the pants in wide vertical stripes of white and medium/dark blue instead of checkered to give it a Germanic look, similar to the stripes of the Arverni Longshield skirmisher shirts, but the stripes should run up and down, not left to right.
Belgic Foresters (Archers)
[rating=3; bow, short sword, no armor]
Similar to Gallic Foresters: a powerful but expensive unit. The bow was not a common weapon. We might consider removing the 'fire arrow' ability. Almost like 'special forces,' these men are hunters and thus are excellent ambushers and can hide anywhere. Would wear nicer clothing than the slingers, with some good dyed cloth, fine cloaks, etc., but colors would be muted to aid in ambushing.
Note: Possibly the Gallic Archer unit with a different trouser pattern and color scheme? Maybe light brown hair and some woad markings on their faces or arms?
Belgic Raiders (Round Shield Skirmishers)
[rating=2; javelin, dagger, small shield, no armor]
A general levy unit. Good skirmishers but poor in hand-to-hand combat. Fast moving, great stamina, excellent ambushers. Can swim.
Alternate names: Belgic Light Skirmishers/Belgic Ambushers/Belgic Round Shield Skirmishers
Belgic Skirmishers (Long Shield Skirmishers)
[rating=3; javelin, spear, medium shield, no armor]
A levy of tougher/wealthier/older men than the Raiders, with better shields and defensive skill, can fight hand-to-hand as good light infantry, but don’t form tight formations. Fast moving, good stamina, good ambushers.
Alternate name: Belgic Medium Skirmishers / Belgic Long Shield Skirmishers
Note: This skirmisher unit could be one with a shield. The Arverni Light skirmisher would do the best because of the smaller round shield. Maybe change the hair color to light brown or blonde, keep the beard as well, and make the pants a green on dark green. Also, is it possible to add a fur cape/cloak?
Belgic Light Spearmen
[rating=3; javelins, spear, large shield, no armor]
Similar skill and combat ability as the Longshield Skirmishers, but these men train to fight in close formation and have larger shields. Can form shieldwall. Bonus fighting cavalry. Good defensive troops, but their lack of armor is a serious liability. Have javelins for some limited ranged capability, but are not expert javelin men, so the missile attack is fairly low (not nearly as powerful as Roman pila, for example).
Note: The Arverni Light spearmen has a short sword/dirk of some kind for melee. Is it possible for the Belgic unit have a club instead?
Belgic Heavy Spearmen
[rating=4; spear, armor (chain?), large shield, helmet]
Upper-class, wealthy warriors and their bodyguards, a very tough force of heavy spearmen. Good skill, excellent armor, great morale. Bonus fighting cavalry. These guys are horse-slayers. Can form shieldwall. Fewer men per unit than regular infantry.
Note: The two images below are a good representation. In the top pic the shield he has is a bit small, but, we can keep it that way because Celts did use small shields so they'd have less weight on them during battle. Leather armor could be added if we wanted. Either one seems fitting for a heavy spearmen unit.
Belgic Axemen
[rating=3; axe, medium shield, no armor]
Medium infantry wielding the axe. Good shock troops and next to spearmen good anti cavalry. Powerful charge, good hand-to-hand ability. Uses warcry.
Note: This image shows an axe/spear combo, which might be good for this unit or might make it too powerful...
Belgic Swordsmen
[rating=3; javelins, sword, medium shield, leather armor]
Veteran warriors; note that swords were relatively rare among the Belgae, especially compared with the Gauls. They form loose formations to allow them to swing their swords. Powerful charge, good hand-to-hand ability. Uses warcry. Note that they have a few javelins for a limited ranged ability, but these are much less effective than skirmisher javelins or Roman pila.
Note: Seasoned warriors and probably a bit wealthy and successful in battle. They might have some leather armor (like whats on the Arverni elite skirmisher), add a golden torc around his neck, perhaps a matching bracelet.
Belgic Champions
[rating=5; sword, chainmail tunic, large shield, helmet]
The very best Belgic footsoldiers, veteran warriors with excellent arms and armor. Possibly wielding two-handed swords? Fewer men than regular units.
Belgic Light Cavalry
[rating=3; javelins, spear, small shield, no armor]
Similar to Scythian light cavalry -- they throw two javelins then attack with a spear. Good morale, good ambushers, mediocre light cavalry, very vulnerable to spearmen or heavy cavalry. The Belgae were not noted as horsemen, so this should be a sub-par light cavalry unit (or, alternatively, have the same skill level but cost more than similar units for the other Celtic factions).
Note: On the image below, perhaps add a little design or something simple on the shield to spice it up a bit, and change or delete the purple/gold covering that hes sitting on.
Belgic Nobles(Noble Cavalry)
[rating=5; javelins, spear, medium shield, chainmail]
Similar to Arverni Nobles, but with less armor and generally less 'wealthy' looking.
Light Chariots
[rating=3; javelins, spear, small shield, no armor]
Light, 2-man chariots, very little armor. Meant for scouting and skirmishing. Throw javelins, and can keep an ample supply of them. A good ranged unit.
Heavy Chariots
[rating=4; javelins, spear, larger shield, some armor]
2-man chariots, but more heavily armored than the light chariots. Able to close with the enemy and fight hand to hand.
Nervii Swordsmen
[rating=4; javelins, sword, large shield, possibly some armor]
The Nervii were reputed to be the fiercest of the Belgic tribes, and one of the largest. Known as the 'Spartans of the Belgae'. They very nearly defeated Caesar's legions at the battle of the Sambre and were ferocious close-combat warriors.
Note:Caesar wrote that the Nervii appeared and crossed a river with such speed that his troops could not take the covers off their shields, put on their helmets, nor form up into their regiments in time before the entire force was upon them. IMHO, this sounds action by a light infantry force. The Nervii could be an elite light infantry with no body armor for speed and stealth that Caesar notes them for, but with strong offensive ability. A helmet and a shield could be their only protection which would allow them to move quickly along with the javelins/darts to throw. Also, the Nervii were located closest to the Germanic tribes, who were notorious spear users due to their lack of access to metals. Maybe this unit could have a spear instead of a sword due to this and Germanic influence?
Treverii Medium Horsemen
[rating=4; javelins, sword, medium shield, chain and helmet]
The Treverii were a Belgic tribe that bordered Germany, located near the Rhine. They had ties with the Germans. Caesar notes that the Treverii were the best horsemen in all of Gaul. This is a tough medium cavalry unit, skilled in hand-to-hand combat. Since the Belgae in general lacked cavalry, I suggest this be the only medium cavalry unit available to them, and have a restricted AOR.
Note: Their shield might have the Celtic horse symbol:
http://en.wikipedia.org/wiki/Uffington_White_Horse
Other than the brown color scheme that we all just love to death, this guy could do. If we wanted, he could be without a helmet, or, a simple leather cap:
Britonic/British Spearmen
[rating=3; javelins, spear, large shield, no armor]
Similar to Belgic Light Spearmen, these are British Celts trained to fight in close formation. Can form shieldwall. Bonus fighting cavalry. Good defensive troops. Likely covered in woad like other Britonic/British units. Only available in Britain and Ireland.
Note: this guy below could represent this unit, minus the sword, or change it to a short sword or dirk or something like that, and maybe a more Briton style shield.
Britonic/British Skirmishers
[rating=3; javelin, spear, medium shield, no armor]
Similar to Belgic Skirmishers.
Note: (The Arverni longshield skirmisher (the old guys) could do. The stripes on the shirt can be made a bit thinner to make them look different, and these guys could have a light beard and "young" hair so they do not look old and maybe a moustache like the Arverni archers have).
Britonic/British Slingers
[rating=4; sling, dagger, small shield]
An elite slinger unit, used extensively by the Britons for defense of their elaborate forts. In quality, similar to Balearic slingers. The best Celtic slinger unit.
Note: (Just to save on the models/slots/etc/...this could be a redo of the Arverni slinger. These guys cold be covered in woad (similar to the Pictones swordsmen) and have a tartan shirt with sleeves to set them apart).
Caledonian Raiders (Round Shield Skirmishers)
[rating=3; javelin, dagger, small shield, no armor]
Excellent light skirmishers from Caledonia. Wild and ferocious warriors.
Note: If we go with the spearman below, this would be a stronger unit, a spear/skirmisher combination, able to fight vs. cavalry.