(Please direct any questions or corrections to Walter Elkins)

1
I BE Corps was located at Köln-Junkersdorf, Germany in 1960. At this time it consisted of two "LANDCENT-type" mechanized divisions:
1 Division at Bensberg
16 Division at Neheim-Hüsten
I Corps Artillery headquarters was located at Köln-Ossendorf, Germany.
2
75 Artillery, located at Dellbrück near Köln, was formed in April 1959 and organized as the first Belgian Army HONEST JOHN missile battalion (Oct 1959). It consisted of a headquarters battery and one firing battery (designated as "2 Btry") with four launchers (2 Btry).
3
75 Artillery added a second HJ firing battery ("3 Btry") in July 1961.
4
75 Artillery was inactivated in March 1969.
5
14 Artillery was activated at Dellbrück, Germany in Jan 1963 and became the second HONEST JOHN battalion of I BE Corps Artillery.
6
14 Artillery was moved to Werl, Germany in Aug 1964.
7
14 Artillery converts to an air defense unit in April 1978.
8
14 Artillery converts to an air defense unit in April 1978.
9
3 Artillery transitions from a divisional mixed artillery battalion to a pure HONEST JOHN battalion (two firing batteries) in Feb 1968 (*).
(*) 3A's 203mm battery is transferred at the same time to 20A.
10
3 Artillery is transferred from 1 BE Div to I BE Corps Artillery In Jan 1969.
11
3 Artillery is reorganized as a LANCE missile battalion (two firing batteries) in the early part of 1978. 
12 20 Artillery transitions from a divisional mixed artillery battalion to a pure 203mm SP howitzer battalion (two firing batteries) in Feb 1968 (**).
(**) 20A's HJ battery is transferred at the same time to 3A.
13 20 Artillery is transferred from 16 BE Div to I BE Corps Artillery in 1969.
14 20 Artillery transitions from M-55 to M-110's.
15 6 Artillery, at Soest, Germany and formerly a brigade artillery battalion under 16 BE Div(?), transitions from M-44 to M-109's (155mm). It appears that the battalion was concurrently place under I BE Corps artillery.
16 17 Rijdende Artillery (Horse Artillery), at Altenrath, Germany and formerly a brigade artillery battalion under 1 BE Div(?), transitions from M-44 to M-109's (155mm). It appears that the battalion was concurrently place under I BE Corps artillery.
17 1 BE Division, Bensberg, Germany was reorganized as a "LANDCENT type" mechanized division in March 1960. (Formerly it was designated as 1 Infantry Division.) This included the assignment of a nuclear capable division artillery battalion, the 3A battalion.
18 1 BE Div is relocated to Verviers, Belgium in 1978.
19 3 Artillery, located at Spich, Germany is reorganized in 1960 as a mixed artillery battalion (8-in howitzers & HONEST JOHN rockets) and relocated to Siegen, Germany (Aug 1960). Assigned to Division Artillery since 1951, the battalion becomes the sole nuclear capable artillery battalion under 1 BE Division. The battalion has one 8-in towed howitzer battery (A Btry) and one HJ rocket battery (B Btry).
20 3 Artillery relocates to Köln-Dellbrück in Jan 1963.
21 16 BE Division, Neheim-Hüsten, Germany was reorganized as a "LANDCENT type" mechanized division in 1959-60. (Formerly it was designated as 16 Armored Division.) This included the assignment of a nuclear capable division artillery battalion, the 20A battalion. 
22 20 Artillery, located at Westhoven, Germany is reorganized in 1959-60 as a mixed artillery battalion (8-in howitzers & HONEST JOHN rockets). Assigned to Division Artillery, the battalion becomes the sole nuclear capable artillery battalion under 16 BE Division. The battalion has one 8-in towed howitzer battery (A Btry) and one HJ rocket battery (B Btry).
23 20 Artillery adds in Aug 1961 a third platoon (3rd MPS Pltn), consisting of 48 men as a security force for the nuclear batteries.
24 20 Artillery relocates to Werl, Germany in Sept 1962.
25 162nd Ordnance Company arrives in Germany in April 1960 and sets up shop in Lüdenscheid. The company is colocated with its higher headquarters, the 552nd US Army Artillery Group. The company's SW storage site is located at Stilleking.
26 162nd Ord Co - I believe the General Support mission for I BE Corps is handed off to the newly arrived 27th ORD Co in 1963.
27 27th Ordnance Company arrives in Germany in Feb 1963 and sets up shop in Büren. The company was colocated with its higher headquarters, the 5th US Army Artillery Group. The company's SW storage site was located at Haarener Wald (a.k.a. Stöckerbusch).  
28 33rd Missile Detachment is located at Köln-Dellbrück in 1960. It consists of 8-in Artillery and Honest John Missile teams and supports several Belgian battalions. The detachment's SAS is located at Wahner Heide.
29 33rd USAFAD is inactivated 1978. 
30 4th Missile Detachment arrives in Germany in February 1963 and is located at Werl, Germany. It consists of 8-in Artillery and Honest John Missile teams and supports several Belgian battalions. The unit's SAS is located outside of Werl.
31 4th MSL Det is redesignated as 4th US Army Field Artillery Detachment (USAFAD) in Sept 1970. No change in mission. At this time the detachment supports the Belgian artillery units - 6A, 14A and 20A.
32 4th USAFAD is reasssigned to the 570th USAAG in Oct 1978. The detachment now supports the following Belgian artillery units: 3A, 6A, 17RA and 20A.
A Major reorganization of Corps Artillery
B Transition to M-109 SP howitzers in 155mm artillery battalions
C Transition to M-110 SP howtitzers in 203mm artillery battalions
D HONEST JOHN rockets replaced by LANCE missiles in 3A