I was playing on the Caribbean map, and by dint of moving my troops to another island, an idea came to me: the boat bridge
You know, on nautical maps with no shallows to cross on foot, you have to garrison troops in a boat, then unload that boat on the other side.
I told myself that we could have a system that allows troops to pass from one bank to the other without using a boat, but by building a bridge to transport the troops, like that, no more loading limit in boats and incessant round trips!
Obviously, it should be held so that it does not fall into the hands of the enemy.