The Wagner Group, which has lost 30,000 soldiers in Ukraine, is now recruiting in Russian schools.
It's opened six recruitment centers to attract "impressionable" youth recruits, an ISW report said.
The Wagner Group, considered President Vladimir Putin's private army, has already lost some 30,000 fighters to death and injury since Russia started the war last February, Insider previously reported.
In Apatity, Murmansk Oblast, members of the Wagner Group shared "heroic stories" and promoted the "little Wagner" youth camp in Crimea, according to the ISW report.
In the past, Putin has also relied on the Wagner Group for Russian influence efforts in the Central African Republic, Libya, Mali, and Syria.