Why was chiang kai-shek able to train a disciplined fighting force when he became the leader of the nationalist party?

He was able to do it because he himself was a trained soldier
People and soldiers respected him for this since he knew what he was doing. Many Chinese leaders joined him and those that wouldn't would be conquered.
hope this helps

Do you have to corresponding answers if not i believe it was live stock and food/supplies hoped this don't forgwtg to rate me up : )