However , instead of surrendering , Ariobarzan and his 700 Immortals fight to the last man .
At the end , his troops are surrounded by Alexander 's army , because of a Persian shepherd , who leads it around the Persian defenses .
Instead of surrendering , Ariobarzan and his 700 Immortals fight to the last man .
At the end , his troops are surrounded by Alexander 's army , because of a Persian shepherd , who leads it around the Persian defenses .