The M13 also fought in Greece, in difficult terrain and in April 1941, M13s of the 132nd Armoured Division Ariete took part in the Siege of Tobruk, with little success against British Matilda tanks.
M13 kæmpede også i Grækenland i vanskeligt terræn og i april 1941, tog M13 kampvogne fra 132. pansrede division Ariete del i Belejringen af Tobruk, uden større succes mod de britiske Matilda kampvogne.