One of the SVZ's first air battles was in the
Slovak–Hungarian War in March 1939 in which Hungary occupied
Carpathian Ruthenia and parts of southern Slovakia. In this the SVZ suffered some losses against
Royal Hungarian Air Force. The SVZ also took part in the
German Invasion of Poland. The SVZ took part in
Axis offensives in the
Ukraine and
Russian Central front sectors of the
Eastern Front under the lead of
Luftwaffe in the
Stalingrad and
Caucasus operations. The engagement in the cost it great losses of aircraft and personnel. For the rest of the war the SVZ fought
US Army Air Forces and
Royal Air Force raids against Slovakia. The symbol of the Slovak air force was a blue and white cross similar to the German
Balkenkreuz, with a red disc in the centre. It was carried on the tail and wings. Engine covers were painted yellow and there was a vertical line on the fuselage. Training aircraft were supplied by Germany and Italy. To defend Slovak air space, the air force used
Messerschmitt Bf 109 (E and G types),
Avia B-534, and some other interceptor types. It was also helped by
Luftwaffe units active in the area. When
Romania and the
Soviet Union entered Slovakia, with some captured aircraft and defectors they organized a local
Insurgent Air Force to continue the fight against Axis forces in country. Others served voluntarily in
Luftwaffe units; later these air units were integrated to the reconstituted
Czechoslovak Air Force after the end of the war. ==Notable SVZ air aces==