Are you thinking of a staff officer? Or maybe a supply officer?
If you're thinking of an actual military rank, the only one (at least in the US Military) is Second Lieutenant. Every other rank beginning with an S is an enlisted rank.
Second Lieutenant is an officer in the army. It begins with the letter S.
It is the Public Affairs Officer.
He was an officer in the United States Army, rising to the rank of General.
He was an Army officer, and later President of the U. S.
Colin Powell was a U. S. Army officer an later Secretay of State.
Officer of the militia. has written: 'The soldier's monitor' -- subject(s): Drill and tactics, United States, United States. Army. Infantry
There is no such requirement for the general public, although civilians employed by the DOD may be required to.
It depends which army you are referring to. However a new contract will be written and will quite likely cover length of service which will take effect from the date of commission.
Grant was a General in the United States Army.
RTS means return to service. It applied to officer candidates in officer training who failed training and were returned to their original units, or returned to service.
Grant got a degree at West Point. He learned to be an army officer. He was not noted as a student, but had an excellent command of English and taking notes.
He was a West Point graduate and was an army officer for 11 years. He left the army to try his hand at farming and later worked in his father's business. When the Civil War began he soon got back into the army, was promoted several times and ended as the commanding general of the union army. After the war ended, he was acting Secretary of the Army.