Ender's physical fight with Mazer Rackham

At Command School, Ender is introduced to his new teacher, Mazer Rackham, the legendary commander who defeated the Buggers in the Second Invasion. Mazer immediately tests Ender by attacking him, and Ender is easily defeated. Mazer tells Ender that he is his enemy and that he will teach him how to defeat the Buggers. The physical fight is a lesson in humility and the importance of being prepared for anything. Ender learns that Mazer is a formidable opponent and that his training will be intense.