When the Volunteer Force was subsumed into the new Territorial Force (TF) under the Haldane Reforms in 1908, the former 1st Sussex Engineer Volunteer Corps provided the divisional engineers for the TF's Home Counties Division, including the Home Counties Divisional Telegraph Company with the following organisation:[1][2][3][4][5][6] Nos 2–4 Sections were attached to and largely manned by the three infantry brigades of the division.

[5][2] The Signal Company had been with the Home Counties Division on Salisbury Plain for its annual training when the order came to mobilise on 4 August 1914.

The Divisional RE remained in England to support Regular formations: the Signal Company joined the 28th Division, which was forming at Winchester primarily from units returned from service in India.

[10] 1st Home Counties Signal Company joined 28th Division at Winchester on 5 January 1915 and provided its communications until beyond the end of the war.

While on the Western Front it participated in the following actions:[11] At noon on 19 October 1915 the division was ordered to leave for an unknown destination within 48 hours.

[9][11] 28th Division spent the rest of the war on this front, where there were few major actions, but the troops suffered steady attrition through trench warfare casualties and sickness.

Finally, on 18 and 19 September 1918, 28th Division took part in the Battle of Doiran and the subsequent pursuit of the defeated Bulgarian Army up the Strumica Valley.

Early in November the 28th Division was sent to occupy Constantinople and the Dardanelles Forts, with Divisional HQ at Chanak (Çanakkale).

[13][14] 67th (2nd HC) Division had the dual role of home defence and supplying drafts to units serving overseas.

Headquarters was at Stamford Brook Lodge, Ravenscourt Park, West London (the former HQ of the 10th Middlesex), with 2 Company at Brighton and sections at New Southgate, Chatham and Hurstpierpoint.

The attack was renewed on 22 May and the division was badly chewed up, but there was no breakthrough: it was the deep penetration further east that forced the BEF to withdraw.

[23][24][25][26] Cut off, the BEF fell back towards the coast, with 44th (HC) Division given the responsibility of defending the area round Hazebrouck.

This rearguard was subjected to intense mortar fire next morning, then by dive-bombing, but held its position for 30 hours while the rest of the division withdrew.

[19] 44th (HC) Division arrived in Egypt on 24 July, shortly after Eighth Army had retreated to the El Alamein position.

[19][32] For Eighth Army's counter-offensive (the Second Battle of Alamein), 44th (HC) Division was to lead one of XIII Corps' thrusts through the enemy minefields on the first night, 23/24 October (Operation Lightfoot).

44th (HC) Division took some part in the pursuit to El Agheila, collecting prisoners, but XIII Corps was short of transport and was left behind as Eighth Army drove westwards.

[20][36] On 17 May, after the BEF was forced to withdraw from the Dyle Line, 12th (E) Division was ordered to concentrate in the neighbourhood of Amiens.

The raw Territorials held up the German advance for 5 hours, allowing the BEF to continue its retreat towards Dunkirk.

Based at Shorncliffe, the unit was numbered as 62 Signal Rgt in 1959 and adopted the 'Cinque Ports' subtitle the following year.