Military Technology

Orange means obsolete.

Armour

 * Iron Scale - Rulhuthyn's patronage of smiths for the best protection of his daughter led to this being unlocked in Horse daughter.
 * Riveted maille - In the update Riding Off, the armor technology was picked off from former Mountain Horse blacksmith slaves, and proved superior to the butted maille which it replaced.
 * Butted Maille - Invented in Famine Stalks.
 * Leather
 * Quilted cloth
 * Bronze plate
 * Wicker - Made obsolete in Great works.

Cavalry

 * Chariot Archer - Chariot archers were becoming obsolete by The Horsemen Ride Once Again.
 * Chariot Archer Elites
 * Horse archers - Acquired in Rumbling Omens with the integration of the Forhuch into the empire.
 * Spoked chariots - Developed by Quiet tensions.
 * Sacred light cavalry
 * Steppe recruit light cavalry - Acquired in the same circumstance as horse archers.
 * Light barding - Armoring of horses in certain vital area. It is a reward from the Patrician faction in the update Riding Off for completing the quest to raise cavalry to 3 or better.

Melee

 * Daggers - The newfound availability of iron in Iron Time is when dagger made its first appearance.
 * Short swords - Developed by More fun and games.
 * Curved cavalry swords - The curved swords was invented by the Freehills in Rumbling Omens and subsequently adopted by the Ymaryn for use in cavalry warfare.
 * Maces - Evolved from ceramic mace at the same time as daggers as a result of iron.
 * Ceramic maces
 * Light Shields
 * Spears
 * Long spears - Probably developed as a counter to cavalry in The Horsemen Ride Once Again.
 * Two-Handed Clubs

Ranged

 * Composite Bows
 * Light crossbow - Matured during the war with the Forhuch in The Horsemen Ride Once Again.
 * Early light crossbows
 * Crude gastraphetes - A large crossbow-like weapon, invented during Epic Age II.
 * Ballista - Evolved sometime during the conquest of the Forhuch and the war with the nomad in Swift Riders.
 * Bolt Throwers
 * Massed fire - It was discovered in Calm before the storm? via the recruitment of Blackbirds.
 * Slings
 * Pila

Siege Weapons

 * Battering Ram

Theory

 * Shield wall
 * Close formation - Massed warfare, discovered in Hero's End to make use of the large number of soldiers effectively.
 * Tactical Phases - It is the idea of moving select forces at certain time and places and using reserve to exploit opportunities or reinforce certain flank. It was discovered by Chakur of Heaven's Hawks in Make the punching stop, which allowed the Ymaryn and their vassal fend off the Thunder Horse and the Harmurri(known as only Swamp Folks at that time) and made them pay considerable tributes.
 * Supply caravans - The war with the Forhuch and the need to supply so many men caused the systematic organization of logistics based on caravans in The Horsemen Ride Once Again
 * Formal lieutenants - Discovered alongside supply caravans was the need to organize the army with formal leadership roles.

Warships

 * Triremes - Arrived in Rumbling Omens.
 * Biremes
 * Naval rams