Why wasn't Italy capable of invading Greece in WW II?

Italy had fought in WWI as a capable member of the alliance, taking a major defeat at Caporetto only to bounce back and bludgeon the enemy down. Twenty years after, it became clear that Mussolini had spent the intervening time not strengthening but weakening its military structure, promoting incompetents, overlooking corruption, running down training, and making the wrong strategic choices. read more

Originally, invading Greece wasn’t necessarily in Germany’s battle plan. Some believe that fighting with Greece was one of the reasons the German army was forced to invade Russia during the winter, for which the German troops were ill equipped. read more