As for the Green Skins, they would crudely construct siege engines, like battering rams or siege towers. If it were the fifth wave or later, they might even bring catapults.
Since this was still an early wave, as Ethan had pointed out, the most they would have to deal with were ladders.
"With thirty-two pioneers, it's not like we're lacking defensive manpower, but it's a bit short for covering the entire wall," Justin said.
"There's no way to quickly reinforce the number of pioneers, so the best option would be to get help from the citizens," Zachary suggested.
It wasn't necessary for the citizens to fight directly. They could simply push ladders off the walls with all their strength or alert the pioneers when enemies approached from blind spots during the chaos. That alone would be a significant help in defending the city, and it was well within the citizens' capabilities.
