The Division has a mechanized brigade from the ROK 8th Infantry Division, three stryker brigade combat teams, a division artillery, a combat aviation brigade, a field artillery brigade, a sustainment brigade, a Chemical Biological Radiological Nuclear and Explosives (CBRNE) battalion, and an engineer battalion.
 All field artillery battalions remain attached to their respective brigade combat teams.

16th Mechanized Brigade from the ROK 8th Infantry Division - will be included in division structure as part of US - ROK force integration project, although not directly attached to the division.

19th Armored Battalion
136th Mechanized Infantry Battalion (MIB)
137th MIB
1st Stryker Brigade Combat Team (SBCT) based at Fort Lewis, Washington - under administrative control of 7th Infantry Division
 1st SBCT's Headquarters and Headquarters Company (HHC)
 1st Squadron, 14th Cavalry Regiment—Reconnaissance Surveillance and Target Acquisition (RSTA)
 2nd Battalion, 3rd Infantry Regiment (Stryker)
 5th Battalion, 20th Infantry Regiment (Stryker)
 1st Battalion, 23rd Infantry Regiment (Stryker)
 1st Battalion, 37th Field Artillery Regiment (FAR)
 23rd Brigade Engineer Battalion (BEB)
 296th Brigade Support Battalion (BSB)
2nd Stryker Brigade Combat Team (2nd SBCT) based at Fort Lewis, Washington - under administrative control of 7th Infantry Division
 2nd SBCT's HHC
 8th Squadron, 1st Cavalry Regiment—RSTA
 2nd Battalion, 1st Infantry Regiment (Stryker)
 1st Battalion, 17th Infantry Regiment (Stryker)
 4th Battalion, 23rd Infantry Regiment (Stryker)
 2nd Battalion, 17th FAR
 14th BEB (Activated 2014/8/21)
 2nd BSB
Division Artillery (DIVARTY), 2nd Infantry Division based at Fort Lewis, Washington - under administrative control of 7th Infantry Division
 DIVARTY's Headquarters and Headquarters Battery (HHB)
 81st SBCT - Washington Army National Guard
 81st SBCT's HHC
 1st Squadron, 82nd Cavalry Regiment—RSTA, Oregon Army National Guard
 1st Battalion, 161st Infantry Regiment (Stryker)
 3rd Battalion, 161st Infantry Regiment (Stryker)
 1st Battalion, 185th Infantry Regiment (Stryker)  – California Army National Guard
 2nd Battalion, 146th FAR
 898th BEB
 181st BSB
2nd Infantry Division Combat Aviation Brigade (CAB) ("Talon Brigade") based at Camp Humphreys, South Korea
 CAB's HHC – "Warrior Knights"
 2nd Battalion, 2nd Aviation Regiment (Assault) (UH −60) – "Wild Card"
 3rd Battalion, 2nd Aviation Regiment (General Support) (CH-47D, UH-60) – "Nightmare"
 4th Battalion, 2nd Aviation Regiment (Attack) (AH-64D) – "Death Dealer"
602nd Aviation Support Battalion (602nd ASB)– "Warhorse", Task Force Ready
 6th Squadron is the Air Cavalry Reconnaissance Squadron of the 10th Mountain Division Combat Aviation Brigade, stationed at Fort Drum, New York.
North Carolina - Rotational CAV under operational command of Combat Aviation Brigade, 2nd Infantry Division at Camp Humphreys
210th Field Artillery Brigade (210th FAB) based at Camp Casey, South Korea - independent brigade under operational command of 2nd Infantry Division
 210th FAB's HHB
 6th Battalion, 37th FAR–M270 Multiple Launch Rocket System (M270A1 MLRS)
 1st Battalion, 38th FAR- M270 Multiple Launch Rocket System (M270A1 MLRS)
 70th BSB
U.N. Command Security Battalion, Joint Security Area
 F Battery, 333rd FAR (Target Acquisition Battery)
 579th Signal Company
2nd Infantry Division Sustainment Brigade Formerly the 501st Sustainment Brigade based at Camp Carroll, South Korea - provides sustainment support to all units in South Korea
DSB's HHC (Camp Carroll)
Special Troops Battalion (STB)
 194th Combat Sustainment Support Battalion (CSSB) (Formerly the 194th Maintenance Battalion)
 11th Engineer Battalion (Camp Humphreys, South Korea)
 23rd Chemical Battalion - Independent battalion under operational command of 2nd Infantry Division
Rotational Armored Brigade Combat Team (ABCT) - Rotational brigade under operational command of 2nd Infantry Division
Since the inactivation of the 1st ABCT, 2nd Infantry Division on 2 July 2015, the ABCT requirement in Korea has been filled by rotational forces from
The Division has a mechanized brigade from the ROK 8th Infantry Division, three stryker brigade combat teams, a division artillery, a combat aviation brigade, a field artillery brigade, a sustainment brigade, a Chemical Biological Radiological Nuclear and Explosives (CBRNE) battalion, and an engineer battalion.  All field artillery battalions remain attached to their respective brigade combat teams.
16th Mechanized Brigade from the ROK 8th Infantry Division - will be included in division structure as part of US - ROK force integration project, although not directly attached to the division.
19th Armored Battalion
136th Mechanized Infantry Battalion (MIB)
137th MIB
1st Stryker Brigade Combat Team (SBCT) based at Fort Lewis, Washington - under administrative control of 7th Infantry Division
 1st SBCT's Headquarters and Headquarters Company (HHC)
 1st Squadron, 14th Cavalry Regiment—Reconnaissance Surveillance and Target Acquisition (RSTA)
 2nd Battalion, 3rd Infantry Regiment (Stryker)
 5th Battalion, 20th Infantry Regiment (Stryker)
 1st Battalion, 23rd Infantry Regiment (Stryker)
 1st Battalion, 37th Field Artillery Regiment (FAR)
 23rd Brigade Engineer Battalion (BEB)
 296th Brigade Support Battalion (BSB)
2nd Stryker Brigade Combat Team (2nd SBCT) based at Fort Lewis, Washington - under administrative control of 7th Infantry Division
 2nd SBCT's HHC
 8th Squadron, 1st Cavalry Regiment—RSTA
 2nd Battalion, 1st Infantry Regiment (Stryker)
 1st Battalion, 17th Infantry Regiment (Stryker)
 4th Battalion, 23rd Infantry Regiment (Stryker)
 2nd Battalion, 17th FAR
 14th BEB (Activated 2014/8/21)
 2nd BSB
Division Artillery (DIVARTY), 2nd Infantry Division based at Fort Lewis, Washington - under administrative control of 7th Infantry Division
 DIVARTY's Headquarters and Headquarters Battery (HHB)
 81st SBCT - Washington Army National Guard
 81st SBCT's HHC
 1st Squadron, 82nd Cavalry Regiment—RSTA, Oregon Army National Guard
 1st Battalion, 161st Infantry Regiment (Stryker)
 3rd Battalion, 161st Infantry Regiment (Stryker)
 1st Battalion, 185th Infantry Regiment (Stryker)  – California Army National Guard
 2nd Battalion, 146th FAR
 898th BEB
 181st BSB
2nd Infantry Division Combat Aviation Brigade (CAB) ("Talon Brigade") based at Camp Humphreys, South Korea
 CAB's HHC – "Warrior Knights"
 2nd Battalion, 2nd Aviation Regiment (Assault) (UH −60) – "Wild Card"
 3rd Battalion, 2nd Aviation Regiment (General Support) (CH-47D, UH-60) – "Nightmare"
 4th Battalion, 2nd Aviation Regiment (Attack) (AH-64D) – "Death Dealer"
602nd Aviation Support Battalion (602nd ASB)– "Warhorse", Task Force Ready
 6th Squadron is the Air Cavalry Reconnaissance Squadron of the 10th Mountain Division Combat Aviation Brigade, stationed at Fort Drum, New York.North Carolina - Rotational CAV under operational command of Combat Aviation Brigade, 2nd Infantry Division at Camp Humphreys
210th Field Artillery Brigade (210th FAB) based at Camp Casey, South Korea - independent brigade under operational command of 2nd Infantry Division
 210th FAB's HHB
 6th Battalion, 37th FAR–M270 Multiple Launch Rocket System (M270A1 MLRS)
 1st Battalion, 38th FAR- M270 Multiple Launch Rocket System (M270A1 MLRS)
 70th BSB
U.N. Command Security Battalion, Joint Security Area
 F Battery, 333rd FAR (Target Acquisition Battery)
 579th Signal Company
2nd Infantry Division Sustainment Brigade Formerly the 501st Sustainment Brigade based at Camp Carroll, South Korea - provides sustainment support to all units in South Korea
DSB's HHC (Camp Carroll)
Special Troops Battalion (STB)
 194th Combat Sustainment Support Battalion (CSSB) (Formerly the 194th Maintenance Battalion)
 11th Engineer Battalion (Camp Humphreys, South Korea)
 23rd Chemical Battalion - Independent battalion under operational command of 2nd Infantry Division
Rotational Armored Brigade Combat Team (ABCT) - Rotational brigade under operational command of 2nd Infantry Division
Since the inactivation of the 1st ABCT, 2nd Infantry Division on 2 July 2015, the ABCT requirement in Korea has been filled by rotational forces from
2nd Infantry Division (United States)