The idea of having more Ranks would be better. Army Ranks are Actually Stated Below
In order from lowest to biggest.

Private 1
Private First Class E-2 2
Army Specialist 3
Corporal 4
Sergeant 5
Staff Sergeant 6
Sergeant First Class (Platoon Sergeant) 7
Master Sergeant and First Sergeant 8
Sergeant Major and Command Sergeant Major 9
The Sergeant Major of the Army (SMA) 10

Officers

Second Lieutenant (2Lt) 1
First Lieutenant (1Lt) 2
Captain (Cpt) 3
Major (MAJ) 4
Lieutenant Colonel (LTC) 5
Colonel (COL) 6

Faction Generals

Brigadier General (BG) 1
Major General (MG) 2
Lieutenant General (LTG) 3
General (GEN) 4
General of the Army (GOA) 5

Commander (Custom) 6

Just an FYI. If this gets Passed by Gaveroids and Admins. This will possibly Army itself Branch of Ranks.