"Tattered Banners on the Greek Border" were the headlines that appeared throughout international news outlets over the course of the following days, depicted corpses as far as the eyes could see, many of which were grouped together around both national and regimental colours.
To put it simply, after being caught in between the German Army, and their rapid advance, as well as the courageous sons of Leonidas who held their ground long enough against overwhelming odds for it to pay off the Allied Forces in the South of Serbia were completely annihilated.
Annihilation in terms of military context didn't necessarily mean the death or injury of every soldier. It simply meant reducing the enemy military's capabilities to fight to a non-existent level forcing the enemy commanders to surrender.