Yes, I have been in the Marine Corps for 8 years now and I have flat feet
No
Not in combat roles.
There is not a minimum number of children someone must have in order to join the military.
Yes.
It depends if you can run. Say if you only have 9 toes, if you can run fine, you can join.
Yes. Many students at military schools are well behaved, especially in the higher-ranked schools.
yes, go to the military base and then select join military career
There is no reason why they can't join the military
Generally if they can graduate from high school, they can join the military.
no because then you will have too much sympathy and you won't do your job.
That is a life decision that only you can make. Ask for input from someone who knows you well.
A minor can only join the military with the permission of their parents and must be at least 17. An 18 year old can join the military on their own.