"penal" . . "Shtrafbat" . "Penal Battalions" . "penal military units" . "penal military unit" . "penal fighter aviation squadron" . "penal companies" . . "Shtrafbat" . . . . "''Shtrafnaya''" . "penal unit" . . . "convict soldiers" . "penal battalions" . "penal battalion" . . "shtrafbat" .