I was 37 when I started my 2-year training at Madrid, and almost 39 when I got my 1st assigment.
In Spain you had to have a college degree to apply, pass a very hard selection process (in my case, 165 selected over 7000+ candidates), and the recomended age was around 28, with no limit. You finished with all possible ratings.
Since 2 years, you just have to be over 18, and have about 40K€ to pay for your 22-week TWR training, no ACC training available for moment ...
Good luck!!