The Greek Army used captured Italian tanks as support for their few motorized companies.  They may have had as many as 40 captured tanks over the course of the war, but probably never more than 24 at any one time -- and those 24 were always spread out across the entire Greek frontier, perhaps no more than 8 in any single grouping.  Only a very few of the total were M11-39's -- purchasing more than 2 M11-39's for any single engagement is not advised.