The Russian mobilised from prisons are trucked to special units made up of criminals who are sent straight to the front line to die in human wave attacks.
These are small unarmored units with light weapons only. They are sent in waves consisting of many small groups of around six across a long area of frontline. They die in huge numbers and if they turn around and retreat they are killed by other Russians themselves, in what is known as ‘blocking units’.
The entire point of their deaths is to spread Ukrainian soldiers and widely as possible and to constantly test the Ukrianian fortification for weakness.
If they find any, bigger infantry units are sent with support from a light armored vehicle with heavier weapons.
This tactic also applies to other people Russia considers disposable. Ethnic minorities such as Buryats, or poor people from rural villages.
Don’t worry, they have options. They can also take out shitty loans laden with fine print from China