Related to this. MC is trying to build a modern nation out from an ancient one, and he also needs a modern military. A modern military is not just about equipment, it is also about having modern mindset and modern discipline. Their enemies, humans, are already an early 19th century military, but with some magical equivalents of infantry High Explosive/shrapnel weapons. There are no wars against animal people for 100 years already because humans are busy fighting amongst themselves. But due to animal-people's tough hides and quick reflexes, animal people's military midset is still an early-18th century military before the arrival of MC. MC introduced radio, telegraph, bolt action rifles, and electrical motors. New animal people military need to dump the idea of shoulder-to-shoulder formations or calvary charges and learn to spread out to avoid concentrated bullets and artillery fires, and more modern (20th century military) infantry tactics. They also need to be a very discipline army, obeying rules that their enemies will not. In the past, human and animal people armies will loot and pillage across battlefields for both resource and pressure-release. MC introduced modern manufacturing and agriculture that ensured an army unit will not constantly be out of food or weapons, or even family letters. But there are more to military discipline than that to make MC's military beloved by the masses, and to win "hearts and minds".
How do we let veterans unlearn years of old habit, and ensure the military will have high moral standard like not ill-treating captives (after we extract useful information from them), be kind and fair to civilians, and surrender captured war assets to the high command for research or redistribution?