| June 1944 | CO: Lt Col The Lord O'Neill |
| Jun 44 | North Irish Horse |
| 1/6/44 | C.M.F. C Sqn support L.EDEMONTS on to M. RADICINO RHQ move to area on outskirts of FROSINONE. |
| 2/6/44 | RHQ and echelons move to vicinity of M. RADICINO, tanks remain in present location with their infantry. |
| 3/6/44 | CO returns from hospital and takes comd of Regt. |
| 4/6/44 | Lt Col Strickland returns to 145 RAC. 25 Tank Bde comes under comd 4 (Br) Div. |
| 5/6/44 | Regt places at one hour notice to move. |
| 6/6/44 | All tanks and Light Scale transport move to area half a mile South of VALMANTONE. Information received that Regt is to be under comd 10th Inf Bde and 28th Inf Bde for first and second phases respectively of anticipated operation. |
| 10/6/44 | 25 Tank Bde comes under comd of 8th Indian Div, this Regt to be affiliates to 17th Indian Inf Bde. |
| 12/6/44 | Liberty runs to ROME commence. |
| 15/6/44 | Order received to move all Sherman Troops, Recce and Light Scale transport. Major P Welch to comd composite Sqn. |
| 16/6/44 | Force as detailed moves at 0730 and harbours for the night at PASSOCORESE. |
| 17/6/44 | Proceeds to MASSA MARTANA and harbours there for the night. |
| 18/6/44 | Force arrives at BASTIA and harbours in the town. RHQ move up to and harbours in the village of PETRIGNANO during the evening. Tanks move up to the battle area. |
| 19/6/44 | 0530 – two troops under comd Lt J Rogers and Lt DF Hunt support 6th Indian Lancers in an unsuccessful attempt to capture RIPA. Lt Rogers is seriously wounded and 2 ORs killed. Troop under comd Lt RA Hubbard give supporting fire to a Coy of 1/5th RGR as they advance to PALAZZO. 0900 – Capt CM Thomas with two troops under command supports 1/5th RGR as they advance into RIPA. Many targets engaged. Lt Hunt's troop have a good shoot as enemy infantry withdraw from RIPA. Two troops remain in position for rest of day firing on targets indicated by the infantry. |
| 20/6/44 | At first light Lt JB Behr's troop support 6th Indian Lancers in advance from original axis. Advance did not progress beyond RIPA as enemy were encountered in strength. 1900 – Lt HE Irwin's and Lt PA Garstin's troops support 1/12th FFR while Lt Behr's troop gives supporting fire, in an attack on two ridges South of R. GRANDE. Both infantry and tanks move on to objectives and consolidate. Tanks remain in support of infantry during the night. |
| 21/6/44 | Tanks assist infantry in mopping up operations around their areas and have very good shoots. OC 1/12th FFR decides force under his command is not large enough to capture COLOMBELLA. It is finally decided attack will not be put in until next day owing to shortage of ammo. Tanks came back one at a time for supplies. Major Welch MC and Capt Thomas are relieved by Major WM Mackean and Capt RD Norton as OC and 2i/c composite Sqn. |
| 22/6/44 | Information received that composite force is to be relieved by 3rd Hussars. Div comd decides to hold up attack until he can have support of full armoured regt. An offensive shoot is carried out during the course of the day, 1,000 rounds of HE being expended and enemy seen to have suffered heavy casualties. |
| 23/6/44 | Further shoot carried out to soften up area for attack. The portion of Regt still at VALMANTONE leave for Bde conc area South of NARNI. |
| 24/6/44 | Composite force relieved at first light by 3rd Hussars. |
| 25/6/44 | The Sherman tanks are left at BASTIA, the remainder return to Bde conc area. |
| 26/6/44 | Regt fully concentrated in area South of NARNI, less Shermans which have been left at BASTIA under comd Capt MB Pope as it is anticipated they will be handed over when 75mm Churchills are received in the next few weeks. |
| 27 – 30 | Period of intensive maintenance. |