From Byzantine Empire The Imperial Army is the oldest branch within Imperial Military, fighting wars from the beginning of Rome in Antiquity, to the foundation of Constantinople by Emperor Constantine I, to the Great Siege of Constantinople in 1453 that saw the Empire victorious. The Army is proud of its long history and its performance in the World Wars. It no long is the senior service in the Imperial Military, but nevertheless, the Imperial Army continues to serve the Byzantine Empire, defending the realm from foreign invaders. Currently, the army is transiting into a professional model, with National Service only voluntary. Two reserve Limitanei tagmata will be formed from national servicemen, and former military personnel. The 1st to 4th Imperial Tagmata are essentially the main fig