Ironclad (2011)

It  is the year  1215 and the rebel barons of England have forced their  despised King  John to put his royal seal to the Magna Carta, a noble,  seminal document  that upheld the rights of free-men. Yet within months  of pledging  himself to the great charter, the King reneged on his word  and assembled  a mercenary army on the south coast of England with the  intention of  bringing the barons and the country back under his  tyrannical rule.  Barring his way stood the mighty Rochester castle, a  place that would  become the symbol of the rebel's momentous struggle  for justice and  freedom.
