Masterpiece of military sf

As the title suggests, we are in the presence of Doeuvre head of science fiction in general and military sf in particular.
1985 Hugo Award, Nebula prices and Science Fiction Chronicle in 1986.
A store next to Stars, attention! (Starship Troopers) Heinlein and Eternal War Haldeman, books need to be read in military sf.
For the record, the novel comes from a story written by the author in 1978, also winning.

The story: Ender Wiggin, precocious child whose birth was permitted thanks to its superior capabilities "potential" was recruited by the army to become nothing less than the savior of mankind, faced with extra- land, beaten once, but likely to return to threaten Earth. Ender share in orbit to practice through role playing, to become a master of strategy in order to ultimately become the commander of combat units spaceships.
Our hero will forge friendships and raise up jealousy and hatred.
Ender 6 years.
On land, his brother and sister, precocious geniuses they too, will work through social networks to manipulate public opinion and governments in order to take power.

The author, manipulates feelings, by staging children in adult roles, subjecting them to situations which can only move us.
Action, strategy, political manipulation, violence, nothing will be spared them and prances, jubilant, according to the situations in which they put themselves or in which they have voluntarily exposed.

Ender The strategy is the first installment of a cycle that continues with The Voice of the dead, but this novel, although there is a great book sf has absolutely nothing in common with the novel presented here.
If you want to prolong the pleasure, rather rush shadows Saga, Book 1: The strategy of the shadow,