A reference document for US Army Social Media pages. These are official pages only, not reunion pages or otherwise. I only went down to battalion level, I did observe that there are some company/troop level pages also below battalion level.
You can usually find some good equipment/reference photos on these pages.
Only Facebook pages at this time, I will add Instagram/Twitter/Youtube pages when I get the time. I will also update with other units as I can.
1st INFANTRY DIVISION
1st Infantry Division
1st Armored Brigade Combat Team, 1st Infantry Division
1/4 CAV
1/16 INF
2/34 ARM
3/66 ARM
1/5 FA
1st Brigade Engineer Battalion
2nd Armored Brigade Combat Team, 1st Infantry Division
5/4 CAV
1/18 INF
1/63 ARM
2/70 ARM
1/7 FA
82nd Brigade Engineer Battalion
1st Infantry Division Artillery
1st Combat Aviation Brigade, 1st Infantry Division
1/1 Aviation (Attack)
1/6 CAV
2/1 Aviation (General Support)
3/1 Aviation (Assault)
2nd INFANTRY DIVISION
2nd Infantry Division
2nd Infantry Division Artillery
210th Field Artillery Brigade
6/37 FA
1/38 FA
2nd Combat Aviation Brigade
5/17 CAV
2/2 Aviation (Assault)
3/2 Aviation (General Support)
4/2 Aviation (Attack)
3rd INFANTRY DIVISION
3rd Infantry Division
1st Armored Brigade Combat Team, 3rd Infantry Division
5/7 CAV
2/7 INF
1/64 ARM
3/69 ARM
1/41 FA
10th Brigade Engineer Battalion
2nd Armored Brigade Combat Team, 3rd Infantry Division
6/8 CAV
3/15 INF
3/67 ARM
2/69 ARM
1/9 FA
9th Brigade Engineer Battalion
3rd Infantry Division Artillery
3rd Combat Aviation Brigade
3/17 CAV
2/3 Aviation (General Support)
4/3 Aviation (Assault)
4th INFANTRY DIVISION
4th Infantry Division
1st Stryker Brigade Combat Team, 4th Infantry Division
2/1 CAV
4/9 INF
2/23 Infantry
1/38 INF
2/12 FA (no page)
299th Brigade Engineer Battalion
2nd Stryker Brigade Combat Team, 4th Infantry Division
3/61 CAV
1/12 INF
2/12 INF
1/41 INF
2/77 FA
52nd Brigade Engineer Battalion
3rd Armored Brigade Combat Team, 4th Infantry Division
4/10 CAV
1/8 INF
1/66 ARM
1/68 ARM
3/29 FA
588th Brigade Engineer Battalion
4th Infantry Division Artillery
4th Combat Aviation Brigade
6/17 CAV
2/4 Aviation (General Support)
3/4 Aviation (Assault)
4/4 Aviation (Attack)
7th INFANTRY DIVISION
7th Infantry Division
1st Stryker Brigade Combat Team, 2nd Infantry Division
1/14 CAV
2/3 INF
5/20 INF
1/23 INF
1/37 FA
23rd Brigade Engineer Battalion
2nd Stryker Brigade Combat Team, 2nd Infantry Division
8/1 CAV
2/1 INF
1/17 INF
4/23 INF
2/17 FA
14th Brigade Engineer Battalion
16th Combat Aviation Brigade, 7th Infantry Division
4/6 CAV
1/229 Aviation (Attack)
2/158 Aviation (Assault)
1/52 Aviation (General Support)
10th MOUNTAIN DIVISION
10th Mountain Division
1st Infantry Brigade Combat Team, 10th Mountain Division
3/71 CAV
2/22 INF
1/32 INF
1/87 INF
3/6 FA
7th Brigade Engineer Battalion
2nd Infantry Brigade Combat Team, 10th Mountain Division
1/89 CAV
2/14 INF
4/31 INF
2/87 INF
2/15 FA
41st Brigade Engineer Battalion
3rd Infantry Brigade Combat Team, 10th Mountain Division
3/89 CAV
2/2 INF
2/4 INF
2/30 INF
5/25 FA
317th Brigade Engineer Battalion
10th Combat Aviation Brigade, 10th Mountain Division
6/6 CAV
1/10 Aviation (Attack)
2/10 Aviation (Assault)
3/10 Aviation (General Support)
11th AIRBORNE DIVISION
11th Airborne Division
1st Infantry Brigade Combat Team, 11th Airborne Division
5/1 CAV
1/5 INF
1/24 INF
2/8 FA
70th Brigade Engineer Battalion
2nd Infantry Brigade Combat Team (Airborne), 11th Airborne Division
1/40 CAV
1/501 INF
3/509 INF
2/377 FA
6th Brigade Engineer Battalion
Aviation Task Force, 11th Airborne Division (No Page)
1/25 Aviation (Attack)
1/52 Aviation (General Support)
25th INFANTRY DIVISION
25th Infantry Division
2nd Infantry Brigade Combat Team, 25th Infantry Division
2/14 CAV
1/21 INF
1/27 INF
1/151 INF (Indiana NG)
2/11 FA
65th Brigade Engineer Battalion
3rd Infantry Brigade Combat Team, 25th Infantry Division
3/4 CAV
2/27 INF
2/35 INF
100/442 INF (No Page)
3/7 FA
29th Brigade Engineer Battalion
25th Infantry Division Artillery
25th Combat Aviation Brigade
2/6 CAV
2/25 Aviation
3/25 Aviation (General Support)
82nd AIRBORNE DIVISION
82nd Airborne Division
1st Infantry Brigade Combat Team, 82nd Airborne Division
3/73 CAV
1/504 INF
2/504 INF
2/501 INF
127th Brigade Engineer Battalion
2nd Infantry Brigade Combat Team, 82nd Airborne Division
1/73 CAV
1/325 INF
2/325 INF
2/508 INF
37th Brigade Engineer Battalion
3rd Infantry Brigade Combat Team, 82nd Airborne Division
5/73 CAV
1/505 INF
2/505 INF
1/508 INF
307th Brigade Engineer Battalion
82nd Airborne Division Artillery (No Page)
1/319 FA
2/319 FA
3/319 FA
82nd Combat Aviation Brigade, 82nd Airborne Division
1/17 CAV
1/82 Aviation (Attack)
2/82 Aviation (Assault)
3/82 Aviation (General Support)
D/82 Aviation
101st AIRBORNE DIVISION (AIR ASSAULT)
101st Airborne Division (Air Assault)
1st ARMORED DIVISION
1st Armored Division
1st CAVALRY DIVISION
1st Cavalry Division
2nd CAVALRY REGIMENT
2nd Cavalry Regiment
3rd CAVALRY REGIMENT
3rd Cavalry Regiment
173rd AIRBORNE BRIGADE
173rd Airborne Brigade