Its post service and its only for field ranks ie Major or equiv or above.
And don't worry those that think they are special because they are a Captain will tell anyone who will listen with out the need for a title.
Some orginisations will send you letters address to Capt. xxxxx most of us get it changed, most of us strip the uniform so we look like a security guard after work as well.
Its bad enough walk through the airport with everyone asking you where things are never mind folk thinking you work in the supermarket.
Also as well most won't want all the local low lifes thinking there is a house full of gear to be liberated.
Its a job, the training isn't particularly technical or academic. Even if you could use something the vast majority of working pilots wouldn't use it. In fact if you look at the ones that do use it there is something pretty dodgy about them. Just look at some of the training school sales reps. Captain zzzzz when in fact the majority of them have never been a Captain on a multicrew aircraft (not that it means anything to be honest, your a Captain from the day you have gone solo) .