We've seen the movies, of soldiers lined up in rows marching towards each other with their officers shouting orders, horns blaring, armor glistening, and flags in the air. This is called attrition warfare, where the point of winning was wearing down the opponent by constantly reducing their resources, such as supplies and personnel. The one who was the victor typically was the one with more resources. This was considered normal until someone did something else that wasn't in the rulebook or wasn't expected. Officers were being targeted at the onset of battle, causing dysfunction in the lower ranks. Enemy soldiers did not have uniforms, causing paranoia for opposing forces. Suddenly, military organizations needed to change their tactics in order to survive in combat. They needed to adapt to opponents that did not follow conventional rules.