Konstantin Pikalov, who was born in 1968, served at least until 2007 in military unit No. 99795 near St. Petersburg, which the media called the experimental training ground of the Ministry of Defense. From 2014 to 2017, as the authors of the material found out, 

https://meduza.io/feature/2020/08/15/kto-takoy-mazay-kurirovavshiy-vybory-v-afrike-glavnoe-izrassledovaniya-bellingcat-o-evgenii-prigozhine

https://www.bellingcat.com/news/uk-and-europe/2020/08/14/pmc-structure-exposed/

https://www.bellingcat.com/news/africa/2020/08/20/threats-lies-and-videotape-prigozhins-long-running-war-on-free-media/