111th (Bolton) Field Regiment was a Royal Artillery (RA) unit of Britain's part-time Territorial Army (TA) formed just before World War II.

One of the lessons learned from the Battle of France was that the two-battery organisation did not work: field regiments were intended to support an infantry brigade of three battalions.

[16] After Alamein 111th Fd Rgt left 50th (N) Division on 21 November 1942 and reverted to Eighth Army command for the pursuit across North Africa.

The following night 1st Bn 5th Royal Gurkha Rifles and 1/12th FFR captured the dominating ground beyond Mozzagrogna, completing the rupture of the Bernhardt Line.

[20] In January 1944 a British force had been established on Vis, an island in the Adriatic Sea off the coast of Yugoslavia, in order to cooperate with the Yugoslav Partisans.

By May 1944 Land Forces Adriatic (LFA) had despatched a sizeable garrison to defend the island, including 111th Field Rgt.

One of these forces, Floydforce, formed around 2nd Battalion, Highland Light Infantry, sailed from LFA's Italian base at Bari, picked up a battery (8 x 25-pdrs) of 111th Fd Rgt and raided the island of Korčula on 14–17 September.

Floydforce launched another operation on 27 October 1944, landing at the city of Dubrovnik on the mainland, initially under Lt-Col C. de F. Jago, who had taken command of 111th Fd Rgt in September.

Once the commander of Vis Bde, Brig J.P. O'Brian Twohig, arrived to take over, Jago could concentrate on coordinating the British and Partisan artillery.

Movement was hampered by the state of the mountain roads, which had been subjected to demolitions by both sides, and the lack of practicable gun positions on rocky hillsides.

The main and secondary roads were blocked by demolitions, but by travelling 47 miles (76 km) over a tortuous mountain route the leading troop of 211 Fd Bty came into action on 30 October with its observation posts overlooking Risan.

The Germans held two old Austrian fortified villages and the gunners found that the only way to breach the old walls was to use a combination of armour-piercing (AP) and high explosive (HE) shells, a slow but effective process.

With the Risan escape route now blocked, a German thrust through Nikšić seemed likely, so Twohig moved his force there, to fight a defensive battle in the Zeta Valley with his field and mountain guns covered by No 43 (RM) Commando in cooperation with the 2nd Partisan Corps under General Radovan Vukanović.

Instead a small force of 25-pdrs set off from Dubrovnik towards Podgorica under the second-in-command of 111th Fd Rgt with a Commando escort and detachment of 579 Army Field Company, Royal Engineers.

On the night of 13/14 December 212 Fd Bty, reinforced by some of the long-range 3.7-inch HAA guns, deployed within range of the German positions outside Podgorica.

On 17 January 1945 Allied landing craft arrived to begin withdrawing the force to Italy, and all troops had left by the end of the month.