New book by the famous Russian historian A.V. Venkova talks about the participation of the Don Cossacks in the Foreign Campaign of the Russian Army in 1813-1814. Along with a description of military operations, the author talks about the military training of the Cossacks, the features of tactics, the principles of organizing reconnaissance and security, and uniforms. In 1813, the Cossacks became the main striking force of the Russian army. The Cossacks distinguished themselves in all major battles of the Foreign Campaign and made a significant contribution to the defeat of Napoleon's army.