The order was given, the Allied Expeditionary Force sent to the Balkans to aid the Serbian Provisional Army was commanded to march south and attempt another assault against the Greek Trenches built which were hastily constructed on their borders with Serbia beginning at the start of the July Crisis.
To put it simply, the Greek Army was putting its all into holding the line, while raising more troops in anticipation of a second campaign against the Turks. Their hope was that the enemy would be caught by the Germans before their defenses broke against the wave of the Allied Onslaught.
Luckily for them, they had a man who, while cautious in nature, was by no means reserved for leading the combined Imperial Army sent to the Balkan Theater. For Bruno there was a phrase, first attested in the 18th century by German sources.