The ending is ambiguous.
The narrator's friends and family are still prisoners, the narrator can't do anything to help them right now.
Meanwhile other forces continue the battle.
It's not exactly an impasse, because the enemy is being pushed back, but the conflict is far from over, and we sense the progress to date has come at great cost.
This lack of resolution makes us think that there is more to the story, although we may not be told it now.