Love Among the Ruins by Warwick Deeping

The leaguer was drawn that night about the towers of Gambrevault, and the castle stood clasped betwixt the watch-fires and the sea. Fulviac's rebels, toiling from evening until dawn, banked and staked a rampart to close the headland. From the north alone could Gambrevault be approached, precipices plunging south, east, and west to front the sea. Athwart the grassy isthmus Fulviac drew his works, running from cliff to cliff, brown earth-banks bristling with timber. Mortars, bombards, basilics, and great catapults had been brought from Gilderoy to batter the walls. Redoubts, covered by strong mantlets, were established in the meadows. Several small war galleys guarded the castle on the side of the sea.

Nor was this labour permitted to pass unrebuked before the leaguered folk upon the headland. There were sallies, assaults, bloody tussles in the trenches, skirmishes upon the causeway. Yet these fiercenesses brought no flattering boon to the besieged. The knights and men-at-arms were masterful enough with an open field to serve them, but behind their barricades Fulviac's rebels held the advantage. The command went forth from Modred the seneschal that there were to be no more sorties delivered against the trenches.