The army developed the military occupational specialty system for tracking the weaponry skills in WWII.
These MOS system had various fields like communications department, gunnery and gunnery control department, field and coast artillery, air crew, security departments etc.
The selected soldiers are assigned their specific tasks and all the groups are organised by a alphanumeric code system.
Availability of new land for farming in the West, while in the east, most of the land has already been taken.
<span>A very famous example for this was the Land Rushes - the races for the land that started in 1889 </span>
Probably the philosophical stance on war, dealing with false accusations and rumor-based.