By Pierre Kosmidis
The blitzkrieg against Greece, codenamed “Operation Marita” started on April 6, 1941.
When Operation Marita began on 6 April, the bulk of the Greek army was on the border with Albania, then a protectorate of Fascist Italy, from which the Italian troops were trying unsuccessfully to conquer Greece.
German troops invaded through Bulgaria, creating a second front. Greece had already received a small though inadequate reinforcement from British Empire Forces, in anticipation of the German attack but no more help was sent after the invasion began.
On the video below, we can see the progress of the German invasion, from the northern borders of Greece on the road to Athens.