they all,18-30, have to do a year of active duty service there. they are being fed to ukrainians in kursk, currently. they surrendered en masse when the ukrainians invaded. here's some from kursk.   ukraine force conscripts only 26 and older, currently. the us want zelensky to lower the age to 18. he has refused so far. here's a bonus himars+gmlrs missile strike with cluster munitions warhead, in the kursk region. some russian bmps and personnel were destroyed.  
United States