Mazer Rackham was an admiral in the International Fleet [4] and the mentor to Ender Wiggin. [5] He was first introduced in Ender's Game.

Mazer Rackham is the fabled hero of the previous Human-Formic war and Ender’s eventual teacher at Command School. Mazer is cold, quiet, and committed to his duty in much the same way as Colonel Graff.

Mazer Rackham travels at extremely high speeds to slow his aging process—as a result, he appears before Ender as a middle-aged man, and serves as Ender’s teacher at Command School.

Mazer Rackham is the half-Māori captain who singlehandedly stopped the Second Invasion by realizing that the Buggers are a hive mind. Due to his inability to pass on his knowledge, he was forced to spend fifty years at relativistic speeds (eight years for Rackham) so that he could train the next commander, Ender Wiggin .

The story follows Mazer Rackham, the hero who saved Earth in the Second Formic War. As soon as the war was over, Earth put together a fleet to send to the Formic homeworlds to end the conflict once and for all.

Mazer Rackman is the first teacher Ender has had who points out things Ender has not already realized for himself. How did Mazer Rackham defeat the buggers in the Second Invasion? Rackman destroyed the queen's ship, the center point of all the other ships.

Rackham is forced to deceive Ender into thinking he is playing mere games and explains to him that no one but a child could have won the war—it took both compassion, daring, and ruthlessness that he himself could not have had since he knew it was not a game. Read an in-depth analysis of Mazer Rackham. Major Anderson

So Mazer is a pretty good model for Ender in some ways. But there are at least two things that seem to set him apart. First, he manipulates Ender into fighting a real war by telling him that he’s actually practicing on computer programs.

Nov 5, 2013 · Mazer Rackham won the Second Invasion for humanity, and it's been said by some sources that he is half Māori. Is there any other information about Mazer Rackham's experiences and origins prior to his introduction in Ender's Game?

After Ender realizes he destroyed the buggers, Graff and Mazer explain why they had to trick him, and why Ender had to be the person who performed the actual killing. Mazer explains that even though he defeated the buggers before, he knew he couldn’t perform such a feat again.