I will contradict ibid said. It's not direct proof, but you can reasonably argue that he learns a couple of important tactical principles, that later translate to real battles.

1. Create your own environment. Don't have a shield? Freeze your legs. Don't have a conglomeration of enemy ships to use M.D. device on? Blow it up on the planet.

2. Sacrifice your own units when warranted. Arguably, this was more of a lesson learned from the last battle ("In that final battle in Battle School, he had won by ignoring the enemy, ignoring his own losses; he had moved against the enemy's gate"). But the concept of using parts of yourself to sacrifice for tactical win also came from the freezing idea.

I will contradict ibid said. It's not direct proof, but you can reasonably argue that he learns a couple of important tactical principles, that later translate to real battles, even when you realize freezing legs was in Battle School 0G training that had nothing to do with actual ship combat in Tactical/Command.

1. Create your own environment. Don't have a shield? Freeze your legs. Don't have a conglomeration of enemy ships to use M.D. device on? Blow it up on the planet.

2. Sacrifice your own units when warranted. Arguably, this was more of a lesson learned from the last battle ("In that final battle in Battle School, he had won by ignoring the enemy, ignoring his own losses; he had moved against the enemy's gate"). But the concept of using parts of yourself to sacrifice for tactical win also came from the freezing idea.