What's a solution for epic battle?

Hi all, i have a big problem in my project, it’s a epic battle with hundred soldiers. I tried to do some way in Unity - Manual: Graphics performance fundamentals to make it smoothly but i didn’t get the good result. Maybe the GPU has too many vertices to process and CPU does so many “drawcall”, but i don’t know how to solve it. Do you have any ideas about this problem? Thank you.

It’s hard to tell what’s going on in your environment, you provided little to no information. Your question was broad. But you might try this.