I can smell the Raw meat. Dirty Habeshites deserve no place in the Horn, death to Ethiopia.
An as for this map, It was most likely made after the Defeat of the Italians in East Africa in 1942. The Brits devised an excellent plan to try and lure the Italians into believing that the main landings will take place in British Somaliland (Operation Camilla) This was but a feint attack and the brits were going to land in Eritrea.
However, the Italians actually kept their men in Eritrea And Somaliland and so the plan was a slight failure though well-thought in its nature.
The main British assault was from kenya, sudan, and Somaliland. The Italians made a brave stand at Eritrea but were overrun by the Brits, free Belgians, and South Africans