Yes
If we examine the entire application process, the most difficult college to get accepted to is actually West Point, the United States Military Academy. It has approximately 50,000 applicants that want to go through the process, and in the end only accepts approximately 1200 new students.
You need to ba 18 but you can join the ROTC or a military group for younger people but it is not technically the "Military"
At military "attention".
Within the US Military that tradition is deeply ingrained and accepted.
There are several idiomatic expressions that the military uses to get attention. However, one command requires attention. That command is "attention!"
There is no such thing as 'the English royal army'.
Applicants must be between the ages of 21 and 37.
It is not a military custom it's a military command, 'stand at ease' means to relax from the 'stand to attention' command.
Millitary schools are designed to help people that have had disciplinary problems
They were accepted
yes
Military army