Yes, that is true (been there, used the uas hrs). I can also state that the taxi time allowance is no longer in place. It was in LASORS and is not in current rules. Don't believe me? Just consult the MAS form in Part O. Which incidentally you may need to supply alongside your PPL application. I did and it smoothed the process. Look at the section on hours - it says in section 5 "Do not add taxi time to military logbook times"
I know the form doesn't precisely cater for your circumstances but it worked for me. Might be able to justify a free aerobatic rating while you are there. Usually if you finish EFT you can get one. However, read section 3a, Section 4, Part P, Page 47. All you need is 5 certified hours in your logbook...just find an agreeable UAS instructor and you are done. Good luck