The first official movie trailer of Ironclad has shown up online:

IRONCLAD

Some battles change war.

This battle change History!

Plot:
“A ragtag group of veteran warriors hold out for months against the hard-fought siege of Rochester Castle in the thirteenth Century. Set in the time of King John’s signing of the Magna Carta treaty, the group struggles to defend the freedom of their country.”

It’s the first Ironclad trailer (only based on the first two weeks of shooting) so I suppose they didn’t have time yet to really polish it. But even like this, it looks quite realistic, and the movie Ironclad is definitely going to be a bloody battle.
:)