The link:
http://www.difesa.it/MINISTRO/COMMIS...sepolture.aspx
This is a database showing Italian war graves (for at least WWI, WWII and Spain Civil War, for what I found). It will not show the unit of a casualty, but only his name, dates of birth and death, places of birth, death and burial.
The name is mandatory as a research criteria.
Hope it helps
Laurent