In March 1942 'F' Divisional Signals arrived from the UK having been detached from 11th Armoured Division. It merged with the former cavalry divisional signals and became the larger part of 10th Armoured Divisional Signals, while the Middlesex Yeomanry provided 9th Armoured Brigade Signal Squadron. The former CO of 11th Armoured Divisional Signals, Lt-Col R.H.O. Coryton, took command, and the CO of Cavalry Division Signals, Lt-Col the Hon Somerset Maxwell, MP, a pre-war Middesex Yeomanry officer, moved to take command of 7th Armoured Division Signals; he was mortally wounded at Alamein later in the year.