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
William Clark was responsible for mapping and documenting the geography, flora, fauna, and indigenous peoples encountered during the Lewis and Clark Expedition. He also played a key role in maintaining order and facilitating communication between the expedition members and Native American tribes. Additionally, Clark provided valuable leadership, navigation expertise, and military skills that were crucial to the success of the journey.
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.