For the first time, the detailed course of events has been reconstructed and the reasons for the defeat of the Russian army are analysed. This account is based on the author’s own observations and first-hand interviews with hundreds of Ukrainian participants in the battle as he found himself cut off and surrounded in the city of Chernihiv during the crucial first months of the war.War in Ukraine Volume 10: The Battle of Chernihiv, February-March 2022 is extensively illustrated with the author’s own photographs of these pivotal events, along with specially commissioned colour artworks and maps.