Roman Empire, 3rd century crisis, historical event, legionnaires, armor, swords, shields, battle, chaos, political instability, economic decline, barbarian invasions, emperors, assassinations, military coups, ancient architecture, crumbling, Colosseum, Roman Forum, dramatic sky, fire, smoke, tense atmosphere, dynamic composition, low-angle shot, dramatic lighting, sunset, oil painting texture, detailed armor engravings, marble statues, fallen, overgrown with vines.