Difficulties in the withdrawal of British and Greek forces

 It seems that the biggest problem with the withdrawal of Greek and British forces included communication between English-speaking and Greek speaking men. There were obstacles created by "the differences in equipment, tactical doctrine, and national temperament. There were issues such as the Australian and New Zealand forces were allowed to use the best roads while the Greeks were given the worst. The Greeks were forced "to march from the Vermion passes across the Florina-Kozani valley to the western passes." The Australian and New Zealand forces needed better roads for their equipment. The Greeks were relegated to the road that could not handle trucks. 

Wilson's organization of his force made communication from five different British commands to the Greeks that much more challenging. The communications problems between Greek-speaking officers and English speaking officers  were a major issue. 

On 13 April 1941, General Papagos ordered the armies of Western Macedonia and Epirus to withdraw. The Greeks were in a deep salient to a new position that continued the British line in a east-west direction.  General Blamey called the British line "an immensely strong natural position". This is based on the account in "Greece Crete and Syria" by Gavin Long.