You can train most units in groups of 5.
yeah I know , it's an ok feature- but I do still prefer the 1 click 10 units option, if someone has played BFME , well that's the kind of style I would like to see in AOE.

And in a trailer ) or something like that ) I saw these really nice formations , were your Musketeers would stand behind your swords/pikes and fire volly's exactly at the same time.
I didn't see an option for units ''merging'' in the demo , is it possible ?
Would like to do some experimenting with those formations.