The Ever Victorious T.O.E.P!

"Enemy! Enemy alert!"

"Enemy? Impossible! How can that be?"

"What? An enemy? Here? Who gave them the balls?"

With the warnings out, at least 50% of the T.O.E.P gang headed out in the open, running speedily to all corners of the walls to defend their territory.

Yes!

The fortress, though having buildings no more than 2 stories high on the surface, was also surrounded by 2 walls, creating a total of 3 sectors within the fortress; The outer, the mid-sector, and the Innermost sector! 

And on all these towering walls covered by greenery, there were stony steps built against the walls and backup ladders for ascending or descending.

The walls had small crevices for the archers to take cover and shoot from behind the walls, though these archers would be standing on an in-built open stairway when making their shots along the various points on the walls.