As an Army NCO pilot I transferred and commissioned into the the RAF. I was told several times during my Army career that wanting to fly was a negative attitude for an officer.
(Due to a bluntie slip I was commissioned the day I arrived at Cranwell. I also remained in the Army until I graduated. Thus I spent 6 months both as An RAF officer and an Army NCO.)
I had to return my Army pay!
(Thud and Blunder did part of my conversion from army gazelle to RAF wessex)