Complex sentence: Reformed on 10 October 1939, the unit was supposed to be equipped with medium bombers but in the spring of 1940 it became one of the first RAF units to receive the Supermarine Spitfire.
Split into simpler sentences: Reformed on 10 October 1939, the unit was supposed to be equipped with medium bombers. However in the spring of 1940 it became one of the first RAF units to receive the Supermarine Spitfire.