The action resulted in the French capture of the Kusseri fort and the German garrison's retreat to Mora.

[2] The initial French assaults on the fort were repelled by German machine guns and resulted in heavy casualties.

Considering the size of his force in comparison to the French one, and the fatigue that had come about after continual attacks, Kallmeyer decided that staying to fight was futile and that retreat was the only option.

Shortly after midnight on 25 September, following a strong French attack on the fort, German soldiers made a fighting retreat from Kusseri.

They made their way to the German stronghold at Mora, approximately 150 kilometers to the southwest and arrived there from 28 September to 9 October.