Nice updates! I just have this observation about my quote: this makes sense, but what does not -- is the ability to train both at the same time . With my espionage I can see AI is confused and building both and the whole thing feels bizarre. In real life by the middle of the seventeenth century, gunsmiths figured out how to build a trigger that was not prone to go off whenever the gun was dropped, at which point the musket replaced the arquebus. Civilization franchise always used the logic that better weaponry makes previous troops obsolete. Arquebus replaced by Muskets replaced by Rifles replaced by Infantry. That's how things are in this mod except for Arquebus Musket transition. By the way in our current game Marines replace Infantry, which is also strange. Why? Marines. The few. The proud. Not every soldier became marine with the advance of technology. The last and only logical replacement of Infantry should be Mechanised Infantry. Marines and Paratroopers can serve as additional elite troops alongside with Infantry.