I've been playing the 1759 Annus scenario. In the beginning of the scenario, Wolfe's army is already in Kebec, in a position to put Quebec (city/fort/harbor/depot) under siege.
All the regions surrounding Kebec are red, meaning they are controlled by France and the army can't move to any of those regions. Fair enough.
At first I just gave the army a offensive posture. After a few turns went by, I noticed that the army was getting dangerously low on supply. So I turned their posture to assault. During turn resolution, I won two battles against Quebec.
After turn resolution, I was puzzled to see that there were still French units in Quebec. I thought since I won, I would have killed or taken the units prisoner. Did they sneak in from an adjacent province? I'm not sure.
I also took a French artillery piece. Cool.
I went ahead and assaulted for another turn. Same kind of result, where I "won," but the French were still there, and I captured some more artillery. I also bombarded Quebec with a fleet.
As I gained artillery, I dragged and dropped them on Wolfe's army, thinking that he could use them in his assaults. Then I noticed he was taking a command penalty because the army was getting too big!!
What to do? I have these weak artillery units (and some of the other units have become very weak too). I can't move them into an adjacent region. Can I simply put them in a separate force within Kebec? But then wouldn't they be vulnerable to attack? I guess it's worth the risk. Maybe I could think of them as a reserve?
Another idea would be to move those units onto some transports adjacent to Kebec. But wouldn't they be vulnerable to attack while loading?
At this point, I noticed that Wolfe is not activated. His envelope is brown and there is a padlock icon flashing over it. But the units do not have padlocks on them. Are they locked or not?
I tried dragging an artillery piece onto the fleet, and the UI indicated that it would be loaded. I tried some units too, some artillery and some very weak infantry. However, they wouldn't load, even though there was enough transport capacity, and the units did not appear to be fixed or locked.