Maoyuu Maou Yuusha - "Kono Watashi no Mono Tonare, Yuusha yo" "Kotowaru!" - Vol. 8 Ch. 27 - First Strike

[MangaDex]

 

[flannan]

In my country, they say "one doesn't change horses when crossing a river". That is, in a time of turmoil, one doesn't just change leaders left and right. The weakness incurred by change of the leader is too great.
Well, we had to do it in WW1, though. Winning a war doesn't fill one's stomach, and we were losing anyway.