Formed 1906 as a department of the Bulgarian army, the Bulgarian Air Force has a long tradition of military aviation. As a participant in both World Wars, Bulgarian pilots flew in various machines both imported and of indigenous design.  

The Spanish Air Force is one of the oldest Air Forces of the world. It saw combat use in many conflicts and especially in the Spanish Civil War, where Republican and National forces fought for the future of Spain.

From all the Air Forces around the world, the Egyptian Air Force is one of the youngest. It was formed in 1930 as the Egyptian Army Air Force, by a decree from king Fuad I

The beginnings of the Hungarian Air Force can be traced to the Austro-Hungarian Air Force. Hungarian aviators took part in the First World War, and pilots such as Ferenc Gräser, István Fejes and József Kiss became aces

The development of military aviation in Greece began to ramp up in 1911 when the Hellenic government turned to France and sent six of their officers to be trained as pilots, whilst ordering their first aircraft from the French firm Maurice and Henry Farman

The Belgian Air Force (today known as the Belgian Air Component) was officially founded on the 16th April 1909. At first, the new branch consisted only of one balloon company

The Romanian Air Force was officially founded on 1. April 1913, being the fifth country in the world to have their own air force, and they were among the first to actually use planes for military purposes

The first nation to recognize the potential of military air power was Austria. In the First and Second World War, Austria produced many pilot aces, including the well-known Luftwaffe aces Walter Nowotny and Maximillian Stotz.