Yes. Even though the position itself is largely administrative, a First Sergeant is very much a leader, being the senior NCO of a company.
The '3' indicates skill level 3, which would be the rank of Staff Sergeant. A Staff Sergeant would be a squad leader, or a Staff Sergeant with seniority or who is close to promotion to Sergeant First Class might fill the role of Platoon Sergeant. They might also work as a staff NCO in a battalion/brigade/division/etc. shop, which wouldn't be a leadership position.
There is no such rank as "First Class Sergeant". You have either Sergeant First Class, which is E7, or First Sergeant, which, along with Master Sergeant, is E8.
YES
First sergeant
First Sergeant (E8).
The lozenge is simply a device to differentiate a First Sergeant from a Master Sergeant, Sergeant Major, etc.
I am in JROTC (junior reserved officers in training corps) so I have to know... Private Private first class specialist or a corporal (I am a corporal) sergeant staff sergeant sergeant first class Master sergeant or first sergeant sergeant major command sergeant sergeant of the army
The United States army consists of twelve ranks. They are, in order of rank, Private, Private First Class, Specialist, Corporal, Sergeant. Staff Sergeant, Sergeant First Class, Master Sergeant, First Sergeant, Sergeant Major, Command Sergeant Major, and Sergeant Major of the Army.
To become a first sergeant in the military, you typically need to attend specialized training courses such as the First Sergeant Academy, which is offered by each branch of the military. The academy covers topics like leadership, management, administrative responsibilities, and personnel management. Additionally, it may be required to complete other career progression courses and meet certain rank and time-in-service requirements.
The first American political parties developed primarily out of the need to provide alternative leadership. They were a platform for criticizing the policies and leadership offered by the government.
When a First Sergeant leaves, it'll either be because they've been relieved of duty, or are about to be promoted to Sergeant Major. Who replaces the First Sergeant depends on the availability. It may be a Master Sergeant transferred from a staff position, or it may be a Sergeant First Class who is about to be promoted to E-8. You won't find Master Sergeants in line companies - Master Sergeants are found in staff positions.
The First Sergeant, or Top, is the senior NCO of the Company, Battery, or Troop.