Heres some interesting facts (Gross averages!!): There are currently 330,000 Freemasons (not "Free Masons"), meeting in 8,644 lodges registered with the United Grand Lodge of England; 150,000 registered under the Scottish and Irish Constitutions: Total 480,000 in UK.
Current UK population is estimated at 59,600,000 (2003 Census)
Approx 50% are male, and approx 25% are aged below 21. That leaves approx 2,235,000 eligible men in the UK. Even taking the most conservative estimates, that means that 1 in every 50 men in the UK is on the square!
The current manning level for the British Army is approx 117,000 (all ranks and ages), approx 10% are female leaving 105000 serving men. Just based on the national average (1:50) there are at least 2000 serving soldiers/officers who are freemasons.
I'm sure you have your own theories or can apply your own more scientific maths to other Services....
Did you know that Freemasons raise the most money for non-masonic charities each year....
Freemasonry is not a secret society - it is a society that has secrets - big difference. While it is true that you have to be 'invited' to become a mason, it is relativly easy to extend an invitation to somebody who shows an interest.
http://www.militarymasons.co.uk/