This is a very interesting video released by a retired officer of Russian special forces known under the nickname “Razvedos”. He does have a video blog on YouTube in Russian (LINK). In his video blog, he being a high professional provides overviews and analysis of various equipment, and methods and tactics of modern warfare.
The video above was released by Razvedos in Russian on July 13, 2019. The video demonstrates fragments of the training methods and training elements of Russian task forces.