The Greek entry into the war brought many benefits to the Imperial Powers, but as many drawbacks. The largest benefit was the fact that the Ottomans now found themselves being invaded on two fronts. On their westernmost borders, they were now being attacked by the Hellenic Army.
Whereas from Armenia, the Russians and Austro-Hungarians, along with a small contingent of German troops, pushed through into Anatolia. At the same time, the Hellenic Navy began to patrol the Mediterranean alongside the k.u.k. Kriegsmarine, or in other words the Austro-Hungarian Navy, giving the Imperial Powers significantly more firepower to combat British, French, and Ottoman attempts to aid Serbia.