On 23 March , Italian partisans detonated an improvised explosive device at , killing over 30 German soldiers . Retaliation was swift , and tenfold . On 24 March , Giglio was transferred , more dead than alive , unable to stand , to Regina Coeli prison . That same day , 335 Italians , none of whom had had anything to do with that attack , were taken to an abandoned '' pozzolana '' quarry near the ancient Via Ardeatina , and were ( in batches of five ) shot in the back of the neck ; an event called the Ardeatine massacre . Giglio was one of the victims . German military engineers then dynamited the site to conceal it
Ardeatine massacre
Ardeatine massacre
Maurizio Giglio