In Chapter 7 of Ender's Game, titled "Salamander," Ender Wiggin is assigned to the Salamander army, an elite group within Battle School, known for its competitive spirit and strong leadership. Upon his arrival, he is immediately confronted with the dominant personality of his new commander, Bonzo Madrid, who is a fierce and aggressive leader. Bonzo is not only protective of his position but also deeply insecure about Ender’s potential, which he perceives as a threat to his authority.

Ender’s first day with the Salamander army is marked by a sense of tension and intimidation. The other members of the army view him as an outsider, and Bonzo makes it clear that he does not approve of Ender’s presence. Bonzo's leadership style is harsh, as he emphasizes physical strength and aggression over strategy. Ender quickly realizes that to survive in this environment, he must tread carefully and navigate the political landscape of his new team.

During training exercises, Bonzo often singles out Ender, using him as a scapegoat for his own insecurities. He refuses to allow Ender to participate in battles, insisting that he must prove himself first. This exclusion only fuels Ender’s determination to demonstrate his capabilities. Despite Bonzo's antagonism, Ender remains focused on his objective: mastering the skills necessary for warfare against the Formics.

As Ender observes the dynamics within the Salamander army, he begins to strategize. He recognizes that Bonzo thrives on fear and intimidation, but Ender also understands that true leadership requires more than brute force. He starts to build relationships with some of his fellow soldiers, particularly with a boy named Dink Meeker, who becomes an ally and provides insights into the nuances of the army's internal politics.

Ender’s tactical mind begins to shine through as he devises innovative strategies during practice sessions, even while being sidelined by Bonzo. He learns to adapt to Bonzo’s aggressive tactics and finds ways to incorporate his own strategic insights into training. This chapter illustrates Ender’s resilience as he confronts not only physical challenges but also the psychological warfare of his peers.

The chapter culminates in a significant event where Ender is forced to confront Bonzo directly. In a mock battle, Ender finds himself in a position to take charge, showcasing his natural leadership abilities and strategic prowess. Despite Bonzo's attempts to undermine him, Ender manages to turn the tide by using his wits and understanding of the game, earning respect from some of his peers while further inciting Bonzo's jealousy.

Ultimately, "Salamander" is a pivotal chapter that highlights the theme of leadership and the complexities of interpersonal relationships within a military environment. Ender’s experiences in this chapter set the stage for his growth as a leader and strategist, as he learns to balance his empathy with the ruthlessness required to succeed in Battle School.