Page 132 - Enders_Game_Full_Book

And, therefore, battlerooms are available only on a scheduled basis. After tonight, your next turn is in four days."
"Nobody else is holding extra practices."
"They are row, Ender. Now that you command another army, they don't want their boys practicing with you. Surely you can understand that. So they'll conduct their own practices."
"I've alway's been in another army from them. They still sent their soldiers to me for training."
"You weren't commander then."
"You gave me a completely green army, Major Anderson, sir--" "You have quite a few veterans."
"They aren't any good."
"Nobody gets here without being brilliant, Ender. Make them good." "I needed Alai and Shen to--"
"It's about time you grew up and did some things on your own, Ender. You don't need these other boys to hold your hand. You're a commander now. So kindly act like it, Ender."
Ender walked past Anderson toward the battleroom. Then he stopped, turned, asked a question. "Since these evening practices are now regularly scheduled, does it mean I can use the hook?"
Did Anderson almost smile? No. Not a chance of that. "We'll see," he said.
Ender turned his back and went on into the battleroom. Soon his army arrived, and no one else; either Anderson waited around to intercept anyone coming to Ender's practice eroup, or word had already passed through the whole school that Ender's informal evenings were through.
It was a good practice, they accomplished a lot, but at the end of it Ender was tired and lonely. There was a half hour before bedtime. He couldn't go into his army's barracks -- he had long since learned that the best commanders stay away unless they have some reason to visit. The boy's have to have a chance to be at peace, at rest, without someone listening to favor or despise them depending on the way they talk and act and think.