| Active | 1645 to 1648 |
| 1651 | |
| Country | Scotland |
| Allegiance | Covenanter |
| Engager | |
| Conflicts | First Civil War |
| Second Civil War | |
| Third Civil War | |
| Type | Horse |
| Colonel | John Middleton |
| Area Raised | Borders |
| Aberdeen & Banff | |
| Flag Colour | |
| Flag Design | |
| Field Armies | Leven 1645 |
| Leslie 1645 | |
| Middleton 1647 | |
| Hamilton 1648 | |
| Charles 1651 | |
Scottish horse regiment of Middleton, serving in England during the First Civil War then favouring the Engagers in 1648 and raised again in 1651
A history of the unit is shown in Edward M. Furgol’s A Regimental History of the Covenanting Armies 1639-1651 Edinburgh, 1990. ISBN 0 85976 194 0
The regiment initially included a number of English troopers, unemployed after the creation of the New Model Army.
In the winter of 1645-6 Middleton held a command in Northern Scotland, although his own cavalry regiment had re-joined Leven's army around Newark. Seven troops of his regiment served at the siege of Newark, but the eighth, Captain Bruce's of 71 horse, likely accompanied Middleton as a lifeguard. The siege of Kincardine Castle is dated as 1646 but given as 1647 in some sources.
Mauchline Muir was a skirmish between the party of Scots Engagers, who favoured invading England, and Covenanters opposed to this plan.
In 1651 the new recruits were supposed to bring a horse, sword, pistols, back-and-breast and a helmet.
A list of the regiment's officers is shown in Stuart Reid's Scots Armies of the 17th Century 1. The Army of the Covenant 1639-1651 Partizan Press 1998 ISBN 094652550