This photograph, dated 30 October 1935, shows Ethiopian troops rallying to the cause of the Emperor Haile Selassie.
This is the information on the back of the photo: “Dedjasmatch Machacha, one of Ethiopia’s most influential leaders, recently marched into Addis Ababa with 10,000 of his followers to offer his services and those of his men to Emperor Haile Selassie. This picture shows some of Machacha’s troops in Addis Ababa before leaving for the North.”
Martin Plaut 
Was this the 2nd world war?
Yes – it was the beginning of the Second World War for Ethiopia, which began tragically early, with the Italian invasion.
Actually, it was the Italo-Ethiopian War. Emperor Haile Selassie I personally addressed the League of Nations saying that if the convened nations didn’t stop Italy’s invasion and takeover of Ethiopia in it’s tracks, it would lead to a war involving all of the nations, and that is exactly what came true several years later.