No, you don't get it. The rest of the front was almost empty, even though a German attack was a possibility. The Greeks were asked to defend something more than the yard immediately in front of the Italian army by the British generals, and refused. They knew full well a German attack would pulverize everything they had out of Albania, and even though they did have a chance to bog down the German army in the mountains, they threw it away because they had to avoid losing to Italy. That was literally it: Italy started an attack with 87,000 men, Greece countered with 105,000 men. The disorganized attack, thrown through ridiculously defensive terrain, was easily repelled, and the Greek army used the confusion to advance in Albania. The counterattack was later stopped cold, but dislodging from the mountains an army just under your size often proves difficult, even with great leadership (which Italy doesn't have). Keeping the Italians there required the whole Greek army to be concentrated on the Albanian front (Yugoslav attempts to close the deal before the German came were swatted away easily), to the point of disintegrating any chance to actually, you know, defend the country.