If you remember those games, think Battle Isle or History Line, when it comes to armies, as it is more or less the same.
They had to remove the ability to stack military units in order to make geography work as in reality, where a pass is a choke point. If you can simply move as a stack, terrain has little effect. I think that is the reason, why there are no stacks anymore. On the other hand, you do not need large armies, 5-8 will usually do, sometimes even less.
I was wondering about the upkeep cost too...I almost thought I can't read the thing right, but it seems it's simply not documented
They had to remove the ability to stack military units in order to make geography work as in reality, where a pass is a choke point. If you can simply move as a stack, terrain has little effect. I think that is the reason, why there are no stacks anymore. On the other hand, you do not need large armies, 5-8 will usually do, sometimes even less.
I was wondering about the upkeep cost too...I almost thought I can't read the thing right, but it seems it's simply not documented

