It can get +45 strength, so 70 base strength at military academy. With good promotions that gives it +10 strength, +1 movement and an additional +7 strength when flanked. 70 strength unit with only 200 faith. It seems that Nihang is much better than Cossack, which is already a great UU, at the same tech req with Nihang. Cossack is 67 strength and costs 680 faith. Maybe I shall back for Lahore for being the most overpowered CS.