Animorphs

In Animorphs, a children’s science fiction series by American author K. A. Applegate, five American teenagers suddenly become aware of a secret alien invasion of planet earth. As the only people with the capacity to stop the invasion, the teenagers decide to form a resistance and fight back. In very little time the characters form a clear chain of command with a specifically designated leader.

At one point during the series the leader leaves for a short period of time. Faced with a sudden mission, the Americans never consider the option of operating on a consensus basis – instead they immediately pick a new leader. Then, even though most of the group disagrees with the new leader’s decisions, everyone follows the decisions, because they were made by the leader.

Additionally, towards the end of the series, the leader is faced with the option of either killing his brother (who is under the control of the invading aliens) or giving the aliens access to extremely dangerous technology. The leader decides to kill his brother, but, fearing how this action will affect the leader’s future decision-making abilities, one of the other members of the resistance stops him. This insubordinate member is immediately reprimanded and demoted.