Napoleon once said, "If I had Cossack cavalry in my army, I would use them to sweep the world." This is because even Napoleon was defeated by the Cossacks. —From this, we can deduce that Cossack cavalry > French dragoons > Polish winged hussars > Hungarian hussars > Prussian cuirassiers. The strongest cavalry in the world—the Zaporizhia Cossacks—were mostly serfs who escaped from landowners' enslavement, and were the precursors to Ukraine. Book summary: The first half mainly covers: uniting heroes against the Ottomans, establishing a federation, fighting the Ottomans, and rebuilding Rome. The second half mainly covers: eating the Burgundian skull-cracked, and fighting the Reformation Wars. The famous letter says: "You, the devil of Turkey, brother and friend of the devil, henchman of Lucifer. What kind of demonic knight are you, unable to kill a hedgehog even with your bare buttocks?"...

In 1422 AD, the Eastern Roman Empire had long lost the glory of Justinian's era. Its territory consisted only of Constantinople and a few isolated enclaves such as Morea, resembling a giant ship sailing on a sea of ​​time, its hull riddled with holes, struggling to stay afloat amidst the turbulent waves of history. In this turbulent moment, a stranger's soul drifted to this land, vowing to change everything and give this ancient empire, now in decline, a new lease on life.

In Constantinople in 1272, an empire was fading into twilight. A soul from the future awoke in the body of Andronic II, the gravedigger of Rome. Distilled spirits, movable type printing, cannons, fleets… He wielded technology and reason as his sword, tearing a bloody path through the old world of theocracy and ignorance. From the first pot of gold in the royal workshops to the roar of the Anatolian industrial region; from the undercurrents of the Sicilian Vespers to the cannon fire of the battles on the Black Sea and the Mediterranean; from the iron hooves conquering the Turks to the white sails of the New World. —The old world was burning, and a new order was being born. This time, Byzantium was not the final chapter of history, but the beginning of civilization.