The rankings in the United States Army can be divided into three categories: enlisted personnel, warrant officers, and commissioned officers. Here are the details of each category:

Enlisted Personnel

• Private (PVT)
• Private Second Class (PV2)
• Private First Class (PFC)
• Specialist (SPC)
• Corporal (CPL)
• Sergeant (SGT)
• Staff Sergeant (SSG)
• Sergeant First Class (SFC)
• Master Sergeant (MSG)
• First Sergeant (1SG)
• Sergeant Major (SGM)
• Command Sergeant Major (CSM)
• Sergeant Major of the Army (SMA)

Warrant Officers

• Warrant Officer 1 (WO1)
• Chief Warrant Officer 2 (CW2)
• Chief Warrant Officer 3 (CW3)
• Chief Warrant Officer 4 (CW4)
• Chief Warrant Officer 5 (CW5)

Commissioned Officers

• Second Lieutenant (2LT)
• First Lieutenant (1LT)
• Captain (CPT)
• Major (MAJ)
• Lieutenant Colonel (LTC)
• Colonel (COL)
• Brigadier General (BG)
• Major General (MG)
• Lieutenant General (LTG)
• General (GEN)
• General of the Army (GA) - This rank is only achievable in times of war, where the commanding officer must be equal or of higher rank than those commanding armies from allied nations. The last officers to hold this rank served during and immediately following World War II.

Its worth noting that the commissioned officers ranks can be split into three categories, from highest to lowest: general officers, field grade officers, and company grade officers. General officers encompass the ranks from brigadier general up. Field grade includes major, lieutenant colonel, and colonel. Company grade includes second lieutenant, first lieutenant, and captain.