A tech called engineering that allows +1 speed to siege equip and it is researched in the siege workshop.
New tech called precision that increases the accuracy of catapults and trebs by 50% researched in siege workshop.
New unit called Ballista - fires a large arrow, made in siege workshop and TC, cost 6 turns, HP16, attack range 9, power 12, armour 0, pierce armour 4, movement 1, sight 8, only effects the target unlike catapult that effects area around.40% conv res, bonuses 50% on all troop types, 0% on all buildings. Need ballistics to build.
A tech called Marching researched in barracks that gives +1 speed to infantry
A tech called Riding Skill researched in stable gives +1 speed to horses
A new unit called chariot, trained in stables, cost 8 turns, HP 45, Power 14, attack range 1, Armour 4, Pierce armour 3, movement 4, sight 5, same bonuses as cavalry.
A new tech called telescope, gives +1 sight to all units. researched in TC.
Let me know what you think