First of thanks for this awesome game, it has been a blast to play so far. Here a few things that maybe aren't quite working as intended.

Description/How to Reproduce When I discovered plenty of empty land to the west of the starting area, I absolutly wanted to colonize it. To do so, I had a ship with the attibute that ignores the deep water effects. I proceeded to park it in a port and have a unit of spearmen "join in" the unit from the port tile. When looking in the group description, it said "embarked" so I thought I was good to go and send it arround the deep sea.  The next turns I then got a "army lost at sea" message, checking on the group which still said "embarked" so I didn't worry and did nothing. Next turn my spearmen had drowned and only the 100% health ship was there.....

Reproducability 5/5:I went back with the ship and bought another unit, the french cavalry this time, maybe needed to be of a more advanced area. I searched for quite some time if there was another way to "embark" them but foudn nothing. So I tried again to join both armies and send them over, and sure enough, the same fate awaited  them and I lost another unit....

NOTE: I am not a 100% sure if this was a bug or if I just din't understand the mechanic even after searching and testing around quite a bit. I noticed that when both armies are joined into a group, usually there are the icons showing the slots taken up by the units and those thata are still empty. If you scroll down of this group info card, suddently there were 3 other empty slots with no description of what they are for.