The book by Kaluga historians and search engines A. Ilyushechkin and M. Mosyagin is dedicated to one of the tragic pages of the Great Patriotic War - the fierce struggle for control of the Warsaw Highway, the focus of which fell on the territory of several heights and villages in the Baryatinsky district of the Kaluga region, adjacent to this the most important transport artery. The Battle of Zaitseva Gora, the collective name given to the battles, lasted more than a year, from February 1942 to March 1943. The enemy in the Zaitseva Gora area had a developed network of strongholds, equipped with various types of weapons, and numerous engineering structures. From commanding heights, the enemy controlled the terrain for tens of kilometers. It was in the battles for Zaitseva Gora that many thousands of soldiers and commanders of the Red Army died. The book is written on rich archival and memoir material. Designed for historians, university teachers, students and anyone interested in the history of the Great Patriotic War. The series “On the Front Line. The Truth about War" has been published since 2006.