Positioning units for bridge defences

[caravel]

Most of the time I'd agree with you. But..............in my last Oda 1580 camp I had 3 teppo with my defending army at Mikawa and all three were run out of ammo with FaW disabled

That's odd, I've never had Teppo run out of ammo. Was a particularly long drawn out battle?

If the number of dead bodies after a bridge battle is any indication, then I would think it does because the greatest concentration seems to be always on the bridge itself....................

In bridge defences I tend to single out a unit towards the rear of the bridge and target that with all my archers. This way your archers fire a bit more over the heads of your own units but do still hit the other enemy units in front of the targetted unit.