Edmund is a better fighter than this. It's not easy to get him to do something so basic as pushing against Peter, because Peter is bigger than he is and weighs more, and so in close combat he's a much tougher opponent than if Edmund had kept his distance.

But it's Rhindon.

It's not only that Edmund wants Peter's sword - he wants to be close to it, he wants to be as close as possible. He doesn't fight the lock, then, only pushes closer and closer, his eyes drawn irresistibly to the lion's head on Rhindon's hilt. Edmund can see taking Lucy's dagger, too, and making the two weapons a matched set. They ought to be, anyway.

He doesn't even notice Peter's foot. He doesn't even notice Peter's gaze.