(in the US) Determine the minimum age qualification for employment for the department you are interested in. The age requirements are not necessarily uniform from area to area of the country.
You first must become a Police Officer , then you can apply for Riot Control or S.W.A.T. Training if you wanted to
To become a SWAT team member you must have knowledge in military tactics as well as tenure as a police officer. The only way to apply for this job is to become a police officer then apply within.
police station nearest you will give you the information you need.
To be a sheriff you have to gain the experience as a police officer. Once you have been a police officer for some time you can apply for the job as sheriff.
If they qualify, any person can qualify may apply and be accepted.
No. While requirements to become a police officer vary around the world, many police forces require some education. Police in the United States prefer at least an associates degree (two-year), although this is not a requirement. Most police do require you to attend a police academy or police college though, which you must apply to.
To become a police detective one must first be 21, have a valid drivers license, and be a legal resident of the US. You must become a police patrol officer and pay your dues. Usually within 2-3 years you can test up as positions open.
Apply to the police academy in your state.
Of course an MP can become a civilian police officer after military service. He or she applies just as one without any police experience would apply. He or she will go through the police academy as a recruit the same way as those without experience. They will find the training easier than a raw recruit but the training is substantianaly different than the military since it addresses civilian procedures and laws.
In Ireland you will have to be a minimum of 27 years of age before you can apply to be a police.
Police forces in the UK have a policy of recruiting an officer then allowing that officer to moving in to specialist field such as mounted police and dog handler etc. You will need to apply to a force and undertake the training to become an officer first then you move through training into probation period, normally a year then specialist opportunities occur
Apply to the Justice system.