Regret. It didn't take use of the Force to see that on the soldier's face. Obi-Wan could hardly leave him to think like that. So he stepped forward to place his hand on the trooper's shoulder plate.

"You did what you could. That's all anyone could ask for."

He had tried, and that's what counted. It was their fault for not having taken it more seriously. He and the council had been so blind. The realized too little too late, and it had cost them dearly.