| Royal Wiltshire Militia 3rd Battalion, Wiltshire Regiment | |
|---|---|
| Active | 1558–1 April 1953 |
| Country |  England (1558–1707) Kingdom of Great Britain (1707–1800) United Kingdom (1801–1953) |
| Branch |  Militia/Special Reserve |
| Role | Infantry |
| Size | 1–4 Battalions |
| Part of | Wiltshire Regiment (Duke of Edinburgh's) |
| Garrison/HQ | Devizes Marlborough (1816–52) |
| Engagements | Sedgemoor |
| Commanders | |
| Notable commanders | Thomas Herbert, 8th Earl of Pembroke Col John Wyndham Thomas Brudenell-Bruce, 1st Earl of Ailesbury Henry Herbert, 1st Earl of Carnarvon John Hobhouse, 1st Baron Broughton Frederick Methuen, 2nd Baron Methuen |
The Royal Wiltshire Militia was an auxiliary regiment of the British Army from the English county of Wiltshire. From their formal organisation as Trained Bands in 1558 until their final service in the Special Reserve, the Militia regiments of the county carried out internal security and garrison duties at home and overseas in all of Britain's major wars. The Wiltshire Militia was active in suppressing Monmouth's Rebellion in 1685 and was present at the Battle of Sedgemoor. It became a battalion of the Wiltshire Regiment in 1881 and trained thousands of reservists and recruits during World War I. It maintained a shadowy existence until final disbandment in 1953.