Once you have the pontoons ready, you really just have to lash the boats together with rope. They’re boats, after all - they can be constructed first, and then rowed into position; rather than being rowed into position and then the bridge bits hammered on top.
In this scenario, the crossing was ultimately uncontested - when the bridge was constructed and the first troops starting moving across, the enemy force scattered.
That being said, there’s a reason that contested crossings aren’t the norm even when you have a permanent bridge in place - very dicey to go through with!
Did they actually do all that nail-hammering construction en situ? Seems like it might have been really hazardous as they approached the enemy shore.
Or maybe they were handy at swinging already-constructed pieces in to position across the pontoon boats.
Once you have the pontoons ready, you really just have to lash the boats together with rope. They’re boats, after all - they can be constructed first, and then rowed into position; rather than being rowed into position and then the bridge bits hammered on top.
In this scenario, the crossing was ultimately uncontested - when the bridge was constructed and the first troops starting moving across, the enemy force scattered.
That being said, there’s a reason that contested crossings aren’t the norm even when you have a permanent bridge in place - very dicey to go through with!