Lieutenant Colonel Rupert Charles Ponsonby, 7th Baron de Mauley,, is a British hereditary peer, former Parliamentary Under-Secretary at the Department for Environment, Food and Rural Affairs and retired Territorial Army officer.

The Royal Wessex Yeomanry is a reserve armoured regiment of the British Army Reserve consisting of five squadrons. Formerly part of 43 (Wessex) Brigade, the regiment joined 3rd Division in July 2014, to provide armoured resilience to the three armoured regiments within the Reaction Force. In 2015 the regiment was moved from the operational command of 3rd Division to 1st Armoured Infantry Brigade, and later to 12th Armoured Brigade Combat Team, but members of the regiment still wear the 3rd Division formation badge to reflect their role in supporting the three armoured regiments in the division.