600k losses is absolutely astonishing, if true. Wikipedia places their armed personnel numbers at ~2.5m, so to lose a fifth of your army to a war that you didn't need to start, that will ultimately leave you in a worse strategic position is ridiculous.
What is the endgame here? In two years they've lost a fifth of their army. In ten years will it be the entire army? I just don't see why they're continuing.