The storm troopers are one in a hundred. He will not be moved by bribes or trapped by extortion. He did not hesitate in obeying orders, he did not flinch in carrying out the just actions of the Empire. The Storm trooper team is invincible because we have strict training, we are united, we have overwhelming firepower. We will give our lives to the emperor.

As like as two peas in common sense, ordinary storm troopers are all alike, but soldiers can identify their teammates by showing the identification of enemy and friend in their helmets. Civilians and enemies will only see the same face of unity and never retreat. As like as two peas fell down, but storm trooper who was exactly the same as the enemy took his place immediately, they would lose their will to fight.

Source: @ashmoretattoos86