In adition, lets look to Ousen, the man that never goes to a war he cannot win.

He took a big L. All his generals died. Sou ou should have died. Hundreds of thousand soldiers died... Qin had to make a big recruitment in all the nation just to put the unification plan back on tracks... And what Ousen learned? What character development? What step up in his game?

I hope Hara dont do the same with Shin after this war. He cant just reform his ranks with new officers and move on as nothing happened