http://www.unithistories.com/units/4th%20Inf.Div.asp
The 610th was attached to the 4th SignalCo, 4th Infantry Division, along with the other following units:
4th Signal Company
Attached
377th Anti-Aircraft Artillery AW Battalion (Mobile)
B Battery, 453rd Anti-Aircraft Artillery AW Battalion (Mobile)
129th Anti-Aircraft Artillery Gun Battalion (Mobile)
D Battery, 129th Anti-Aircraft Artillery Gun Battalion (Mobile)
B Battery, 413th Anti-Aircraft Artillery AW Battalion
A & B Batteries, 486th Anti-Aircraft Artillery AW Battalion
899th Tank Battalion
Task Force Barber, 6th Armored Group
70th Tank Battalion
CC Boudinot, 3rd Armored Division
33rd Armored Regiment, 3rd Armored Division
759th Tank Battalion
CC A, 5th Armored Division
D Company, 10th Tank Battalion, 5th Armored Division
C Company, 709th Tank Battalion
A Company, 5th Armored Division
C Company, 774th Tank Battalion
B Company, 774th Tank Battalion
A Company, 19th Tank Battalion
B Company, 737th Tank Battalion
Task Force Rhino
C Company, 772nd Tank Battalion
4th Cavalry Group
F Company, 24th Cavalry Recon. Sqaudron
4th Cavalry Recon. Squadron
38th Cavalry Recon. Squadron
102nd Cavalry Group
B Troop, 102nd Cavalry Group
24th Cavalry Recon. Squadron
A & C Troops, 89th Cavalry Recon. Squadron, 9th Armored Division
5th Recon. Troop, 5th Infantry Division
101st Cavalry Group
101st Cavalry Recon. Squadron
116th Cavalry Recon. Squadron
87th Chemical Mortar Battalion
81st Chemical SG Company
A & B Companies, 91st Chemical Mortar Battalion
99th Chemical Mortar Battalion
B & D Companies, 23rd Armored Engineer Battalion, 3rd Armored Division
1st Platoon, 9th Engineer Combat Battalion
15th Engineer Combat Battalion, 9th Infantry Division
1121st Engineer Combat Group
Hq & Hq Company, 1121st Engineer Combat Group
112th Engineer Combat Battalion
146th Engineer Combat Battalion
254th Engineer Combat Battalion
996th Engineer Treadway Bridge Company
610th Engineer Light Equipment Company
One Platoon & Light Equipage Platoon, 502nd Engineer Light Pon. Company
298th Engineer Combat Battalion
B Company, 308th Engineer Combat Battalion, 83rd Infantry Division
294th Engineer Combat Battalion
159th Engineer Combat Battalion
B Company, 7th Engineer Combat Battalion, 5th Infantry Division
C Company, 63rd Engineer Combat Battalion, 44th Infantry Division
13th Field Artillery Obsn. Battalion
B Battery, 980th Field Artillery Battalion
B Battery, 65th Armored Field Artillery Battalion
915th Field Artillery Battalion, 90th Infantry Division
183rd Field Artillery Battalion
951st Field Artillery Battalion
690th Field Artillery Battalion
391st Armored Field Artillery Battalion, 3rd Armored Division
87th Armored Field Artillery Battalion
26th Field Artillery Battalion, 9th Infantry Division
18th Field Artillery Battalion
196th Field Artillery Battalion
186th Field Artillery Battalion
190th Field Artillery Battalion
17th Field Artillery Obsn. Group
955th Field Artillery Battalion
987th Field Artillery Battalion
Hq & Hq Battery, 188th Field Artillery Group
172nd Field Artillery Battalion
981st Field Artillery Battalion
B Battery, 285th Field Artillery Obsn. Battalion
323rd Field Artillery Battalion, 83rd Division
C Battery, 559th Field Artillery Battalion
322nd Field Artillery Battalion, 83rd Infantry Division
442nd Field Artillery Group
81st Field Artillery Battalion
174th Field Artillery Battalion
285th Field Artillery Obsn. Battalion
290th Field Artillery Battalion
Hq & Hq Battery, 285th Field Artillery Battalion
46th Field Artillery Battalion, 5th Infantry Division
66th Armored Field Artillery Battalion, 4th Armored Division
512th Field Artillery Battalion
236th Field Artillery Battalion
752nd Field Artillery Battalion
58th Armored Field Artillery Battalion
771st Field Artillery Battalion
257th Field Artillery Battalion
177th Field Artillery Battalion
522nd Field Artillery Battalion
686th Field Artillery Battalion
220th Field Artillery Battalion, 44th Infantry Division
217th Field Artillery Battalion, 44th Infantry Division
630th Field Artillery Battalion
969th Field Artillery Battalion
359th Infantry Regiment, 90th Infantry Division
39th Infantry Regiment, 9th Infantry Division
26th CT, 1st Infantry Division
36th Armored Infantry Regiment, 3rd Armored Division
83rd Armored Recon. Battalion, 3rd Armored Division
2nd Battalion, 60th Infantry Regiment, 9th Infantry Division
39th CT, 9th Infantry Division
2nd Platoon, 9th Recon. Troop, 9th Infantry Division
2nd Ranger Infantry Battalion
5th Ranger Infantry Battalion
99th Infantry Battalion
330th CT, 83rd Infantry Division
329th CT, 83rd Infantry Division
C Company, 52nd Armored Infantry Battalion, 9th Armored Division
10th CT, 5th Infantry Division
347th Infantry Regiment, 87th Infantry Division
346th Infantry Regiment, 87th Infantry Division
319th Infantry Regiment, 80th Infantry Division
318th CT, 80th Infantry Division
3rd Battalion, 317th Infantry Regiment, 80th Infantry Division
324th Infantry Regiment, 44th Infantry Division
506th Parachute Infantry Regiment, 101st Airborne Division
A & C Companies, 899th Tank Destroyer Battalion
801st Tank Destroyer Battalion
C Company, 634th Tank Destroyer Battalion
B & C Companies, 703rd Tank Destroyer Battalion
A Company, 899th Tank Destroyer Battalion
893rd Tank Destroyer Battalion
801st Tank Destroyer Battalion
803rd Tank Destroyer Battalion
802nd Tank Destroyer Battalion
C Company, 808th Tank Destroyer Battalion
610th Tank Destroyer Battalion
776th Tank Destroyer Battalion