In the Senogoku Jidai mod, I added some logical units based upon new technology ie Budo (The Way of War) for the most part and eliminated the events that had to fire with the death of older units. This meant overhauling the tech tree quite a bit. Then learning Bushido levels adds various improvements since these are the ways of Chivalry. Then having learned both Budo and Bushido you can make actual armies acting in defensive then offensive capacities, then a true highly defensive and offensive army unit, and ultimately an Imperial Army for the Emperor or Shogun. It seems like there is a maximum number of units that can be displayed based upon their attributes and/or very high defensive and offensive values. Later the armies show up but some lesser units do not. It seems like either 26 is the maximum or I have made a puzzling error. The clans who lack these high upgrades to make armies still show the full compliment of upgraded units. In most cases, the units did not become obsolete. I tried it both ways with say Yari Ashigaru (1, 2, 3) leading to Yari Samurai through. I would like to have both new units show up like the Nagamaki Samurai who were actually elite battlefield soldiers and have armies. I'm curious why it's not working at the advanced levels when armies come into play. I added very high defensive values for the last terrain type to reflect the higher trade and food of urbanization plus fortification built into citadels. This makes armies essential as it's design flaw of unit stacks being killed versus the silliness of one on one unit attacking one at a time which makes no sense as time goes on during the Sengoku period. This also means choosing the right battlefield terrain in the grid to win using tactics and strategy. It took a week to fully populate 28 cities in all 7 clans so there are some epic battles in both fortresses and in citadels but often it results in stalemate which is accurate versus a field battle. The AI has tons of money and infrastructure generating revenue so it can churn out LOTS of units. There also are two new naval upgrades to essentially hiring Wako pirates and then Akabune. Then shore bombardment and then Ozutsu shore batteries to repel those. The legendary geisha is the only diplomat and occurs late in history so the tech is largely learned and not stolen but are usedfor sabotage and bribery. And by then the AI has lots of money to elect to do so. So far it's great as long as I can get this peculiar issue of elite units working as well as late armies. It starts in 1488 with ronin being easily recruited with high defensive but low offensive value and very limited movement. This means the AI has otherchoices besides various ashigaru and samurai Yari units and Naganata units. Historically cavalry were not like western cavalry as the horses were not bred and or trained like their Western counterparts (see Dr. Karl Friday's books), but there is an expensive elite cavalry unit using yari that is treated at a better heavy cavalry IV. I'm very pleased with the repertoie. I also had available slots for disease, earthquake, and tsunami as barbarian units that can be fired in the event file that then have an effect. The ninja are just as strong but since they are "air units", there are upgrades to lessen their effect...ie a kind of law enforcement (a missile defense if you will). I added pollution back in but these are offset by a series of pollution reduction improvements by "governance" buildings. The war dojo is a factory with output which improves science but now is tempered to remove the pollution.