Fort Solgales

Fort Solgales (ソルがレス砦, Sorugaresu Toride) is a fortress located seven miles (eleven kilometres) northwest of Bernia. It is where Gilthunder of the Holy Knights was stationed before its destruction.

Plot
Gilthunder was in Fort Solgales, when he heard that a child pulled his sword out. He decided to see himself if this was accident or not and borrowed a spear from one of the guards and threw it directly at Bernia. Unfortunately the spear was caught and returned at the Fort by Meliodas, which resulted in the Fort's destruction.