 The Fifth Yugoslav Army took responsibility for the south @-@ eastern border between <unk> Palanka and the Greek border . However , the Yugoslav troops were not fully mobilised and lacked adequate equipment and weapons . Following the entry of German forces into Bulgaria , the majority of Greek troops were evacuated from Western Thrace . By this time , Greek forces defending the Bulgarian border totaled roughly 70 @,@ 000 men ( sometimes labeled the " Greek Second Army " in English and German sources , although no such formation existed ) . The remainder of the Greek forces — 14 divisions ( often erroneously referred to as the " Greek First Army " by foreign sources ) — was committed in Albania . 
