A really interesting article.

full text:
https://italicsmag.com/2021/03/25/th...-independence/

An extract:
The historian William St Clair records 940 foreign volunteers who came to fight alongside the Greeks. Of those, Italians made up the third largest nationality, with 137 volunteers, behind France (196) and Germany (342). In reality, the true number was much higher as most volunteers were never recorded. Perhaps 1,200 came to Greece, including 150-200 Italians. Around a third of them died during the campaign.