If you participate in ROTC in college, completion of the first two years will allow you to enter the military in the third pay grade rather than the first.
There are other organizations who's training will net you advanced pay on enlistment, for example; training as a cadet in your local Civil Air Patrol squadron.
National Guard recruiters will also award advanced pay grades if you help recruit other people.
At first an individual increases rank by "time in grade". Then based on an individual's "test scores" - performance - and then needs of the service. If there is a need for an individual of a higher rank and this person is the best fit -they are promoted. Officers are prompted by selection boards -not test scores.
It really depends on the branch of service mainly because each branch has its own regulations and procedures on promotion's, however one way would be:
Increase or strengthen yourself physically
Consider taking college courses
Request additional duties
Know everything there is to know about you MOS (job)
Know your current role and at the least 2 ranks ahead of you
Know all the programs that the branch offers
Basically improve yourself by improving your organization and request additional responsibilities showing that you are ready for that next rank.
if you join as a private, then you must study and/or go to a military academy, then once you graduate as an officer, from there on in you will be recommended for a promotion by a senior officer.
If you're staying within the enlisted ranks, higher education can help you advance further, as can on-the-job performance, attending and completing training courses and correspondence courses, and distinguishing yourself from your peers.
The first three ranks, Private to Private E2 to Private First Class, are essentially automatic. The first promotion is a matter of time is service plus time in grade. The second promotion to PFC is the same, with the addition of the recommendation of a supervisor in your chain of command. Usually this is a Platoon Sergent, a Section Chief, or a Platoon Leader (officer). you may also be, in certain situations, recommended by Top (The unit First Sergent) or the CO (Commanding Officer).
For promotions beyond E3, it is a matter of time in service, time in grade, positive evaluations, and schooling (NCO Academy, Warrior School, etc.). Some of this may have changed over the past twenty-five years since my time in, but I doubt much has changed.
Sergeant is a higher rank than Corporal.
general
Second Lieutenant is the higher rank
No, Field Marshall is the highest rank in the army. Even very few get promoted to this.
No, you say "Ma'am" or refer to them by their rank.
general army is a higher position than general police as general police is two star rank whereas general army has five star rank.
Major is the higher rank.
When an individual first joins the British army, they will be given the rank of officer cadet before they finish training. They might also have the rank of private, depending on where they are training.
The highest rank in the army is general. Unless in a real war than it it general of the army which is 5 stars. Jointcheif and all that is just a title not a rank
2nd leitnante
This is filed under US ARmy and US Navy, so let me clarify.. A Captain in the Army is pay grade O3, whereas a Colonel in the Army is pay grade O6. Colonel is the higher of the two. The Navy has a different rank structure for officers than the other branches. A Captain in the Navy is 06 - equivalent to Colonel. The rank of Colonel does not exist in the Navy.
It would depend on which 'army' you are referring to. Generally, a Field Marshall is the highest rank in an army.