About the book: 2016 / ERTAUL - this is the name in the Moscow Kingdom for the advanced mounted reconnaissance regiment, which always goes to the vanguard of the tsarist army and where only the best of the best are selected. And ours a contemporary, abandoned half a thousand years ago, will earn the honor of becoming the commander of this elite formation! He will save the Russian army from encirclement, disrupting the outflanking maneuver of the Crimean Horde. He will conduct a successful special operation to intercept the secret correspondence of the Polish king with the papal legate. He will save the royal treasury from the Poles and will be awarded the princely title!