The draft was developed to get middle and lower class Americans to fight in the Vietnam war. It was ran as a government program that called up its citizens to serve their country. People could not decline to serve, other Wise they would have been jailed. The rich avoided the draft by having their doctors write them off as having a physical condition that will interfere with training and performance.
One circumstances that prevented England from expanding its territories quickly as other European nations was that they were basically located in an Island.