Two three engines bombers Savoia-Marchetti S.79s of Spanish Nationalist Air Force flying in a cloudy sky with huge CBs (cumulonimbus) during Spanish Civil War. Victor Sierra

Cumulonimbus

Two "Falchi delle Baleari" (“Balearics Hawks”), alias Savoia-Marchetti S.79s, of Spanish Nationalist Air Force but with Italian crews, flying over Palma di Mallorca and the British units of the International control established to prevent the shipment of arms to the fighting parts during the Spanish Civil War. May 1938.Victor Sierra

In flight over Palma di Mallorca

One of seven recce plans Caproni Ca.310 Libeccio former Royal Yugoslav Air Force taken by Croatian Air Force and employed on Eastern Front from the Kroatische Luftwaffen Legion. The seven twin engine was related to Yugoslav purchase in Italy, 1938, of twelve Ca.310s. Victor Sierra