We have number of casualties from Prigozhim himself.
Marks, the chief of staff of the Wagner PMC, commented on the personnel who took part in the NVO, as well as how many moved to the Republic of Belarus:
• 78,000 people in various positions passed through the SVO as part of the Wagner PMC.
• 49 thousand got into the ranks of "Wagner" from places of deprivation of liberty.
• On May 20, that is, on the day of the capture of Bakhmut, the number of deaths since March 19, 2022 was 22 thousand people.
• Number of wounded on the same date - 40 thousand.
• As of May 20, there were 25,000 "bayonets" in service, plus a number of 300ths who were in the process of recovering from injuries.
• 10 thousand fighters moved to the Republic of Belarus
15 thousand people are on vacation.
Thus, less than 50% of the PMC staff went to Belarus, while the majority went on vacation. Apparently, vacations can last more than one month, and employees are in reserve, and if Wagner starts active operations, the entire reserve of 15,000 will quickly enter the staff of assault squads and other PMC units. But again, this is just a guess.
In addition, it is necessary to rotate personnel in Africa, who sit there for 1-2 years. What we already see on the news from the Central African Republic.