Missing units

[Charriu]

I recently started playing RI and I know I'm late to the party

I noticed not every unit can be built by every civilization. Like for example the Maya can't train Crossbowman or Arabia can't train Longbowman. But is there an easy way to find this information in the Civilopedia? Maybe it's possible to add another section in each Civilizations entry for the missing units?

 

[[Y]]

In the Pedia, at the top row, select Units, then at the top left select Unite Upgrade Chart. It'll give you everything you need.