Government in the medieval Japanese period was extremely important in warfare. Government was mostly the main cause of the wars, whether it was becuase of bad relations with other contries, or just fighting for more land. The Japanese government controlled everything, so when there was going to be a war, it orderd everything to be ready , the samurai, their weapons, and others that may help them win the war. Government was also a very important part of making treaties, so if there was a bad argument, there would be a war. Government was an extremely important part of medieval Japanese warfare