if i have interpreted your question correctly then the answer is simple: they defended the FORT
Impenetrable- The fort's defenses were thought to be impenetrable.
The army had a stockade that surrounded the fort for protection during the battle.
I once lived in a humongous castle with a fort which was 144ft high!
The fort was attacked twice during the Civil War, and eventually abandoned by its garrison. For young children, any collection of boxes can become an imaginary fort.
I will oppose your efforts to read this example sentence! The approaching army will establish a perimeter in order to oppose your temporary fort.
Around six o'clock, I'll have a great answer for you. Around the fort, our cordon was impenetrable.
The chilren made a fort out of sticks and logs.
The soldiers defended their Fort with all their might.
No. The word impregnable already means "impossible to enter."You can replace the word impregnable with "impossible." If you still want to use the word, you can say"The opposing fort proved impregnable during the battle."Having the clause first is unwieldy.
His forte was playing the trombone, but he could play many other instruments. It was obvious from his memoirs that writing was not the ex-general's forte.
the music the pianist played went from piano to forte(loud) or pl;aying piano is the champion's forte(skill)
The word of Saxon origin that can be translated as fort is "burh."