The title says it all regarding these part-time flyers!
Excellent story of a great and historical ( for Scotland ) Spitfire Squadron composed of part-time flyers from all walks of life. Another god aspect of thwe book is that it also covers the efforts of the un-sung Groundcrew who also were part-timers from various engineering backgrounds including a " Red Leader " who much to his amusement came to the attention of authorities who mistook him for a Communist!