Firelord (1980)

From the ruins of empire, a great king arises — Enslaved for centuries, used and then abandoned by the Roman conquerors, Britain is a shattered land -- with petty warlords and tribal leaders fighting over its pieces like mongrel dogs. The time is ripe for a warrior-king who will unite this wounded realm -- and a young centurion courageously answers the call. name is Artorius Pendragon -- and it is his destiny conquer with indomitable iron. A man flawed, filth and painfully mortal -- a clear-eyed leader with a strong distaste for war's necessary cruelties -- he will know a glory unparalleled in historical annals...an ultimately, will lose his heart and his kingdom to greatest betrayal of all.