Storm the palisades!

This is the view from the creek separating the Takeda and Oda forces. Much of the topography has changed because of 400 years of agriculture and industry, but you can see from the re-creation of the palisades that the logs were stout enough to block charging cavalry and also offer some minor protection to the arqubusiers in a melee.
Gaps in the palisades allowed infantry to break Takeda units fortunate enough to be intact after volleys of gunfire.
The museum curator told me that the foliage was very different back in the day with much of the hills that divide the creeks that flow into the valley being denuded of larger trees.
That's important because from the pic you can see that the thick forest also might have prevented attack (let alone Oda generals directing their soldiers).