The battalion's origins lay in the enthusiasm for joining local Rifle Volunteer Corps engendered by an invasion scare in 1859. The volunteer units which became the battalion comprised the following:
4th Hampshire Rifle Volunteers – formed in Havant in February 1860
5th Hampshire Rifle Volunteers – formed in Portsmouth in February 1860
6th Hampshire Rifle Volunteers – formed in Gosport in March 1860
7th Hampshire Rifle Volunteers – formed in Fareham in May 1860
12th Hampshire Rifle Volunteers – formed in Petersfield in May 1860
23rd Hampshire Rifle Volunteers – formed in Cosham in November 1860
In 1880 the units were linked together to create the 2nd Administrative battalion Hampshire Rifle Volunteers. By 1885 the battalion was redesignated 3rd Volunteer Battalion, Hampshire Regiment. Lettered companies were created to form the following organisation:
In 1893 the battalion received the designation ‘’’Duke of Connaught’s Own’’’.
Territorial Force
On the formation of the Territorial Force in 1908, the unit became the 6th Battalion Hampshire Regiment , part of the Hampshire Brigade within the 43rd Infantry Division.
In October 1914, the 43rd Division was ordered to India to relieve Regular troops there. The 1/6th Battalion landed in India in November 1914: it remained there until transfer to Mesopotamia in 1917. The battalion was demobilised on 11 September 1919.
2/6th Battalion
Formed at Portsmouth in September 1914 as a home service unit. Initially part of 2/1st Hampshire Brigade in 2nd Wessex Division, but did not proceed with the rest of the Division to India. Moved to Petersfield, then Bournemouth and Hursley Park. On 13 February 1915 it became a Provisional Battalion. This was known at various times as the Hampshire Brigade Battalion, the 84th Provisional Battalionn, and then the 17th Battalion.
Interwar
The 6th Battalion Hampshire Regiment reformed in the retitled Territorial Army in 1920. In 1938 battalion was converted into the 59th Anti-Tank Regiment, Royal Artillery .
The 59th Anti-Tank Regiment served with the 43rd Infantry Division and went with them to Normandy. On the outbreak of the Second World War in 1939 the Territorial Army was doubled in size. As a result, a 2nd Line duplicate unit was raised as 69th Anti-Tank Regiment, Royal Artillery with headquarters at Gosport. The unit was redesignated in 1943 as 69th Light Anti-Aircraft /Anti-Tank Regiment RA. It was subsequently converted to an infantry role and amalgamated with 51st Field Regiment RA.
Postwar
When the TA was reconstituted in 1947, the regiment was reformed as 383rd Anti-Tank Regiment, RA , with headquarters still in Portsmouth. In 1961 reductions in the size of the Territorial Army led to the amalgamation of the regiment with ‘P’ Battery of 256th Light Anti-Aircraft Regiment RA to form 383rd Field Regiment Royal Artillery . With further reductions in the Territorial Army in 1967 the unit became B Company The Hants and Isle of Wight Territorials. In 1971 on the formation of the Wessex Regiment, ‘A’ Company of the new regiment was designated Duke of Connaught's Own. On the disbandment of the company in the 1990s, the title was lost, though was resurrected in 2014 with the formation of No. 679 Squadron AAC.