Valar wasn't willing to give his opponent time to recover his balance, as he followed up with another quick slash.
The slash causes a gash to start to bleed from his gut through his armor, which is accompanied by a deep grunt. The commander doubles over in pain, seeing his chance the Cyrian soldier seizes his sword in two hands, going for the killing blow.
Somehow sensing the blow coming the commander side steps the attack and makes a stab of his own on the overreaching soldier, scoring a deep chest wound. As the dead soldier slid from the commander's sword, he seemed to stand straiter than before, as if the kill had invigorated him.