The article highlights the main pages of the biography and heroic labor feat during the great Patriotic war of Kabash Kozybayev (1898--1973). More than seventy-five years have passed since the end of the Great Patriotic war. There is not a single family in the former Soviet Union that was not affected by this tragic event of the twentieth century. The authors note that Kazakhstanis fought at the front, worked in the rear, and participated in the partisan movement. Undoubtedly, the life of every Soviet person is unique and unrepeatable, but all wartime people are United by a great feat that should never be forgotten. To achieve victory, the patriots used a variety of forms and methods of assistance to their struggling homeland as is known from history, and suggested to the new conditions. One of these forms was the collection of funds for the construction of military equipment and weapons. One of the bright heroes who supported this initiative was K. Kozybayev, who was the initiator of the purchase of Yak-6 bombers. The authors try to analyze K.'s labor feat. Kozybaev and determine the reasons for the different information on this issue.