Here are some more, again feel free to criticise.
{eng_ball} Engineer Ballista
{eng_ball_descr}
Not content with simple artillery, the engineers went back to the drawing board, and built ballistae! They are more powerful than scorpions, able to skewer multiple armoured soldiers, but have a similar rate of fire. However, they require a minimum of 3 operators per ballistae. They are used both as siege weapons and field artillery.
{eng_ball_descr_short}
A more powerful piece of bolt artillery, able to pierce multiple foes.
{eng_cat} Engineer Catapults
{eng_cat_descr}
These engineers have decided to move onto a different style of artillery, and built catapults. These are capable of hurling missiles at a much greater range than the ballista-style weaponry. However, they are far less accurate. They are mainly used as siege weaponry but can be deployed on the field to destroy other artillery or bombard tightly clustered enemies. They can be loaded either with rocks or fire-pots for a further panic inducing effect, though at the cost of extra range.
{eng_cat_descr_short}
A basic catapult unit that can be used either during sieges or in the field.
{eng_scorp_bat} Engineer Scorpion Battery
{eng_scorp_bat_descr}
The engineers have refined their production process for building scorpions and are able to produce them three times as quickly! As a result, this unit now brings three of these machines to battle.
{eng_scorp_bat_descr_short}
A unit with an increased number of scorpions.
{class} Classicists
{class_descr}
Classicists used to spend their time reading about the ancient world. So, naturally they’ve modelled themselves after the most effective fighting force in the ancient world, the Roman legion. Fighting with a short sword and large shield at close range, it is in a group when they’re at their most effective. They also carry three pila which they can throw either before charging or before being charged to soften up resistance.
{class_descr_short}
Classicists have formed Roman legions, an elite fighting force with proven effectiveness.
{Med} Medievalists
{Med_descr}
Medievalists have also taken on the elite fighting style of the age they study. Namely, plate armoured knights on horseback! Though these horsemen move slowly across the battlefield they can have an increadible impact when they smash into enemy lines!
{Med_descr_short}
An elite heavy cavalry which can sweep infantry aside with ease!
{ASNAC} ASNACs
{ASNAC_descr}
ASNACs study Anglo-Saxon, Norse and Celtic. They have also taken on the role of elite forces from their time period, berserk Norse axemen. Wielding two-handed axes they charge from the sidgewick site, swigging mead, swinging axes and bellowing oaths to Odin, the Norse god of war!
{ASNAC_short}
An extremely destructive unit of berserk axemen.
ASNACs seem a little short, but I'm not sure what else to put in.