welcome back to this world, I was also in IAF for 20 years and after coming out way back in 2000, I head Fin,(my bread and butter) IT (my passion) & admin (No mans baby) in a company of 400 + staff.
Here are the rules of the game to win in corporate world.
Forget what you were in IAF,( faster the better).
Do some thing you enjoy and build specialization, like labour, statutory, recruitment techniques, do job for the sake of job (not for the sake of money).
Build politeness in you, be a good listener, and understand others point of views.
Last but not the least, junk Air-force English and learn Corporate English