Most Greek equipment was still of First World War issue, from countries like Belgium, Austria, Poland and France, all of which were under Axis occupation, cutting off the supply of spare parts and ammunition.
Hertil kom, at hovedparten af det græske udstyr stadig var fra 1. verdenskrig, eller stammede fra lande såsom Belgien, Østrig og Frankrig, som nu var besat af Aksemagterne, hvilket betød, at det var svært at få reservedele og passende ammunition.