First, the military branches use a process called brutalization to strip away a sense of individuality. Recruits endure tough, regimental training exercises to break down any resistance to authority. The military also uses conditioning to train soldiers to react to specific stimuli in a way that's almost automatic. An example is training soldiers to fire at human-shaped targets in a war simulation. Finally, the military uses drill sergeants to serve as role models to instill both aggression and discipline in recruits. With discipline, soldiers are able to fire upon the enemy, while controlling any aggressive urges they have that might cause them to behave inappropriately.
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