All by lowering the draft bar from 27 to 25 years old.
Ukrainian media report citing a source in the General Staff.
Moreover, the Institute of Demography and Quality of Life reports that in 1998-1999, only 416,349 boys were born in Ukraine. Now they should be 25-26 years old.
True, probably not all of them are now in Ukraine.
Let us remember that in April Zelenskyy signed a law lowering the age limit for mobilization from 27 to 25 years.