I was thinking that someone might need focused in certain skills to be allowed into spec ops training but I don't know how the qualifications work for it.
Basically one of the things that I am trying to figure out is how long would a person go between their MOS training and go into special forces training. Can you go immediately after that if you do well in training? Do you need to prove yourself in combat first? Do you have to have a certain rank? How does it work?
Well, the short answer is: it depends.
I know that doesn't help much though.
Each special operations unit has their own requirements, with the one major common element as some type of screening. There may or may not be MOS/Specialty requirements and qualification requirements, but they will all have physical and mental screening requirements.
In general, a special ops member will have a mental disposition of intense loyalty and sense of duty, yet able to be an imaginative/creative thinker (not a robot) - they also have high initiative and strong mental fortitude. Scientific studies have also shown that special operations soldiers, either due to the type of training they endure or because of innate genetic qualities they possess in the first place, respond differently as far as adrenaline response. A regular soldier (and like the majority of regular people also), after a very stressful situation or experience that causes high adrenaline levels, can take days for their adrenaline levels to return to normal and for their bodies to recover back to a pre-situation state. Special ops soldiers can return to normal withing a day, sometimes even within hours. They recover from fatigue and the effects of injury faster also. The downside, an increased risk of heart attack/stroke in middle age and shorter overall life expectancies - statistically anyways.
That's the common stuff.
Some specific requirements of different Special Forces:
Army Rangers: One can enter the Army on a Ranger Contract, in other words, you are moving straight to the Rangers after accomplishment of required training (I believe Pat Tilman and his brother did this). Also, anyone can apply for Ranger training later if requirements are met. (Unfortunately, women are still excluded.)
Contract - Basic Training, followed by AIT (Advanced Individual Training) or OSUT (One Station Unit Training) - which I presume is Infantry training - then on to Airbone Training. After that, if they have qualified, they move on to Ranger School.
Non-contract - Qualified in your MOS (any MOS, but obviously some will carry more weight than others), and Airborne qualified (graduated Airborne training).
Selection isn't guaranteed. Personal records (NCO Evaluation Reports, etc.) are evaluated. If everything is good, you might be selected to attend Ranger training. If you're below E-6 (Staff Segeant) you go to RASP1, all others (NCO's of Staff Sergeant and higher, and all Officers) go to RASP2. If successfully completed, you are then assigned to one of the Ranger Units.
Rank wise, a Ranger can be anything from Private First Class (PFC) and up.
Navy SEAL's: One can enlist in the Navy with the express purpose of endeavoring to become a SEAL. I don't know if there's a "Contract" path like for Rangers. According to Wikipedia, the requirements are as follow:
Screening
Entering training to become a Navy SEAL is voluntary, and
officers and
enlisted men train side-by-side. To volunteer, SEAL candidates must be male, US citizens in the
U.S. Navy or
Coast Guard between 18 and 28 years old. Waivers are available for 17 year olds with parental permission and on a case by case basis for 29 and 30 year olds.
[3] Academically, all applicants must have the equivalent of a high school education, score a minimum of 220 on the
ASVAB and be proficient in all aspects of the English language. Medically, all potential applicants must have at least 20/75 vision, correctable to 20/20, be able to pass the SEAL Physical Screening Test and have no recent history of drug abuse. Lastly applicants must have "good moral character" as determined by his history of criminal convictions and civil citations.
[4][5]
Assessment
Assignment to BUD/S is conditional on passing the Diver/SEAL Physical Screening Test (PST). Prospective trainees are expected to exceed the minimums. The minimum requirements are 500 yd (460 m) swim using breast or
Combat sidestroke in under 12:30 with a competitive time of 10:00 or less, at least 42 push-ups in 2 minutes with a competitive count of 79 or more, at least 50 sit-ups in 2 minutes with a competitive count of 79 or more, at least 6 pull-ups from a dead hang (no time limit) with a competitive count of 11 or more, run 1.5 mi (2.4 km) in boots and trousers in under 11:30 with a competitive time of 10:20 or less.
[6][7]
So, it sounds to me that just like the Rangers, it is possible for relatively low ranking enlisted members to be part of SEAL teams - though they would likely be extraordinary individuals.
But also remember, there are Special Ops, and then there are SPECIAL OPS (know as Tier One special operations). Tier One units would be Delta and SEAL Team 6. They may advertise for recruits to a certain extent, while not specifically stating exactly who they are, but it's likely to be as much an invitation only thing. They don't seem to publicize their requirements.
