I don't have an informed answer to this but until such a time that someone who does answers you, it might be helpful to know what you are looking for is called "oral history". Search for "soviet military oral history" turns up lots of reasonable hits as a start:

• Oral History - Soviet History: a Bibliographic Guide to Published Sources - Research Guides at Harvard Library
• Oral Histories and Interviews - History 233: Soviet History and the Cold War - Research Guides at Davidson College
• THE SOVIET MILITARY EXPERIENCE: A History of the Soviet Army, 1917–1991 - preview-9781134604289_A24507379.pdf
• Soviet & Post-Soviet Wars: An Oral History Project
• GERMAN DEMOCRATIC REPUBLIC OF THE 1970s–1980s THROUGH THE EYES OF SOVIET OFFICERS (ORAL STORIES)

I can't speak to the propagandiness of the above.