9. Navy SEALs (USA)
There have been movies, video games and countless news stories about the US Navy SEALs. Formed in 1962, the Navy SEALs are one of the most elite. Recruits can come from anywhere not only in the military. However, they accept only the highest scoring candidates for training and about 70% of them wash-out during training itself. As a matter of fact, between physical qualifications, general training, SEAL training and then specialized training, it’s amazing anyone gets through it all.