How to use "stronghold" in a sentence

When he reached the stronghold, soldiers were already climbing the barricade, shooting at the rebels

While the soldiers waited at the far end of the street for further orders, and the rebels removed dead bodies from the barricade and took care of the wounded, Marius walked around the stronghold in a kind of dream

Only Marius, looking over his shoulder, saw them cross the stronghold towards the smaller barricade

Javert walked away slowly and Valjean, waiting for him to turn a corner, fired his gun into the air and returned to the stronghold.

The rebels fought long and hard to defend the stronghold, but finally they had to withdraw to the low wall outside the wine shop