E-1 Army Private Private PVT Enlisted Soldier
E-2 Army Private Second Class Private Second Class PV2 Enlisted Soldier
E-3 Army Private First Class Private First Class PFC Enlisted Soldier
E-4 Army Specialist Specialist SPC Enlisted Soldier
E-4 Army Corporal Corporal CPL Noncommissioned Officer
E-5 Army Sergeant Sergeant SGT Noncommissioned Officer
E-6 Army Staff Sergeant Staff Sergeant SSG Noncommissioned Officer
E-7 Army Sergeant First Class Sergeant First Class SFC Noncommissioned Officer
E-8 Army Master Sergeant Master Sergeant MSG Noncommissioned Officer
E-8 Army First Sergeant First Sergeant 1SG Noncommissioned Officer
E-9 Army Sergeant Major Sergeant Major SGM Noncommissioned Officer
E-9 Army Command Sergeant Major Command Sergeant Major CSM Noncommissioned Officer
E-9 Army Sergeant Major of the Army Sergeant Major of the Army SMA Noncommissioned Officer (Special) [more]
W-1 Army Warrant Officer 1 Warrant Officer 1 WO1 Warrant Officer
W-2 Army Chief Warrant Officer 2 Chief Warrant Officer 2 CW2 Warrant Officer
W-3 Army Chief Warrant Officer 3 Chief Warrant Officer 3 CW3 Warrant Officer
W-4 Army Chief Warrant Officer 4 Chief Warrant Officer 4 CW4 Warrant Officer
W-5 Army Chief Warrant Officer 5 Chief Warrant Officer 5 CW5 Warrant Officer
O-1 Army Second Lieutenant Second Lieutenant 2LT Commissioned Officer
O-2 Army First Lieutenant First Lieutenant 1LT Commissioned Officer
O-3 Army Captain Captain CPT Commissioned Officer
O-4 Army Major Major MAJ Field Officer [more]
O-5 Army Lieutenant Colonel Lieutenant Colonel LTC Field Officer
O-6 Army Colonel Colonel COL Field Officer
O-7 Army Brigadier General Brigadier General BG General Officer
O-8 Army Major General Major General MG General Officer
O-9 Army Lieutenant General Lieutenant General LTG General Officer
O-10 Army General General GEN General Officer
O-10 Army General of the Army General of the Army GA General Officer
Major Tripe. General Rubbish.
Private nonsense too...........
Here it's simple as:
1 Son
2 Dad
Eh??
Captain Obvious.