This book is devoted to the description of the heroic struggle of the troops of the 50th army, workers, collective farmers, intelligentsia and employees of the city of Tula and the Tula region to protect their native land from fascist invaders. In the book, along with showing the activities of the army command in organizing defense and military operations of the troops, the work of the regional and city party organizations to mobilize the population of Tula and the region to fight the enemy is thoroughly covered. It widely shows the heroism of our soldiers and fighters of the people's militia, shown by them when repelling the Nazi offensive on Tula. The essay was written on the basis of archival materials, as well as other sources and published open works of both Soviet and foreign historians. The book is designed for a wide range of readers.