Boris Kavalerchik is a mechanical engineer from the USSR who served in the Soviet armed forces reserve before emigrating to the United States. He has made a special study of the opening campaign of the Second World War on the Eastern Front, focusing in particular on the performance of the Soviet tank arm during the German advance. In Russian he has published a monograph and many articles on the subject, and in English he has published 'Once Again About the T-34' in the Journal of Slavic Military Studies. He is currently working on a comparative study of German and Soviet armour on the Eastern Front.