Question: What did the amalgamation of the 93rd Regiment of Foot and the 91st Regiment of Foot re-amalgamate into in March 2006?

Context paragraphs:
91st Regiment of Foot (1759): The 91st Regiment of Foot had a brief existence as a British Army infantry regiment between 1759 and 1763.  It was raised in Ireland, posted in turn to the West Indies and the Iberian Peninsular and finally disbanded in 1763.  Some of the personnel then transferred to the 3rd Regiment of Foot, then stationed in Menorca.  The Regimental Colonel throughout its life was Lt-Gen.  Cadwallader Blayney, 9th Baron Blayney who had fought at the Battle of Minden in August 1759.

Prince of Wales's Own Regiment of Yorkshire: The Prince of Wales's Own Regiment of Yorkshire was an infantry regiment of the British Army, part of the King's Division.  It was created in 1958 by the amalgamation of the West Yorkshire Regiment (Prince of Wales's Own) (14th Foot) and the East Yorkshire Regiment (Duke of York's Own) (15th Foot).  After 48 years service, the regiment was amalgamated again, this time with two other Yorkshire regiments.  It became the 1st Battalion of the Yorkshire Regiment (14th/15th, 19th, 33rd and 76th Foot), with the Green Howards (19th Foot) forming the 2nd Battalion and the Duke of Wellington's Regiment (33rd/76th Foot) forming the 3rd Battalion on 6 June 2006.  Following further merges, in 2012, the battalion was redesignated as the new 2nd Battalion (2Yorks) .

93rd (Sutherland Highlanders) Regiment of Foot: The 93rd (Sutherland Highlanders) Regiment of Foot was a Line Infantry Regiment of the British Army, raised in 1799.  Under the Childers Reforms, it amalgamated with the 91st (Argyllshire Highlanders) Regiment of Foot to form the Argyll and Sutherland Highlanders.

Carabiniers (6th Dragoon Guards): The Carabiniers (6th Dragoon Guards) was a cavalry regiment of the British Army.  It was formed in 1685 as the Lord Lumley's Regiment of Horse.  It was renamed as His Majesty's 1st Regiment of Carabiniers in 1740, the 3rd Regiment of Horse (Carabiniers) in 1756 and the 6th Regiment of Dragoon Guards in 1788.  After two centuries of service, including the First World War, the regiment was amalgamated with the 3rd Dragoon Guards (Prince of Wales's) to form the 3rd/6th Dragoon Guards in 1922.

91st (Argyllshire Highlanders) Regiment of Foot: The 91st (Argyllshire Highlanders) Regiment of Foot was a Line Regiment of the British Army, raised in 1794.  Under the Childers Reforms it amalgamated with the 93rd (Sutherland Highlanders) Regiment of Foot to form the Argyll and Sutherland Highlanders in 1881.

3rd North Carolina Regiment: The 3rd North Carolina Regiment was raised on 16 January 1776 at Wilmington, North Carolina for service with the Continental Army.  In April, Jethro Sumner was appointed colonel.  The regiment was present at the defense of Charleston in June 1776.  The 3rd Regiment transferred from the Southern Department to George Washington's main army in February 1777.  Assigned to Francis Nash's North Carolina Brigade in July 1777, it soon saw action at the battles of Brandywine and Germantown, and was present at White Marsh.  Sumner went home ill in early 1778.  Together with the 4th, 5th, and 6th North Carolina Regiments, the 3rd Regiment was reduced to a cadre and sent home to recruit up to strength on 1 June 1778.  The rebuilt regiment returned to the main army in late 1778, but it was reduced to a cadre again in April 1779 and sent back to its home state.  Assigned to the North Carolina Brigade, the regiment fought at the Siege of Charleston where it was captured by the British Army on 12 May 1780.  The regiment was officially disbanded on 15 November 1783.

Alexander Deuchar: Alexander Deuchar (1777 – 12 August 1844) was a seal engraver and revived the Templar tradition in Scotland in the early 19th Century in order to establish a new form of chivalry.  The Deuchar family had been Jacobite but transferred their allegiance to the Hanoverian cause before 1745, when a prominent Jacobite, Lyon of Easter Ogil carried off the great sword of Deuchar, but it was recovered after the Battle of Culloden in 1746, and in the possession of Alexander when he started his revival of the Scottish Knights Templar.  The new Order started formally in 1805 when a charter was issued to by the Early Grand Encampment of Ireland (previously the High Knight Templars of Ireland Lodge), under the title of the Edinburgh Encampment No. 31.  It became the Grand Assembly of Knights Templar in Edinburgh.  His brother, David, who was serving in the 1st Regiment of Foot, The Royal Scots (The Royal Regiment), joined with other officers of the Regiment.  In1809 Alexander began with Major Mueller of the same regiment to request authority from the Duke of Kent, Grand Master of the Order of England, for a charter for a new Grand Conclave.  The charter was granted, finally, on 19 June 1811, for the "Grand Conclave of Knights of the Holy Temple and Sepulcher, and of St. John of Jerusalem, H.R.D.M. + K.D.S.H.".  David Deuchar served in the Peninsular War (1808-14) in the 3rd Battalion of the 1st Regiment of Foot, The Royal Scots (The Royal Regiment), and during the campaign in Portugal took the altar cross from the Templar Church at the Castle of Tomar which had been destroyed by the French, and presented the Cross at the inauguration of the Conclave.  Somewhat controversially he opened the Conclave to non-Masons, and issued charters to Encampments which were non-Masonic.

Buffs (Royal East Kent Regiment): The Buffs (Royal East Kent Regiment), formerly the 3rd Regiment of Foot, was a line infantry regiment of the British Army traditionally raised in the English county of Kent and garrisoned at Canterbury.  It had a history dating back to 1572 and was one of the oldest regiments in the British Army, being third in order of precedence (ranked as the 3rd Regiment of the line).  The regiment provided distinguished service over a period of almost four hundred years accumulating one hundred and sixteen battle honours.  In 1881, under the Childers Reforms, it was known as the Buffs (East Kent Regiment) and later, on 3 June 1935, was renamed the Buffs (Royal East Kent Regiment).

103rd Regiment of Foot (1794): The 103rd Regiment of Foot was a British Army regiment raised in Bristol in May 1794.  The regiment was raised by Lieutenant-Colonel William Dyott.  Initially known as the Loyal Bristol Regiment, it was renumbered as the 103rd Regiment of Foot later that year but disbanded the following year when personnel were transferred to the 4th Regiment of Foot and the 7th Regiment of Foot.

Argyll and Sutherland Highlanders: The Argyll and Sutherland Highlanders (Princess Louise's) was a line infantry regiment of the British Army that existed from 1881 until amalgamation into the Royal Regiment of Scotland in March 2006.

Supporting paragraphs: 93rd (Sutherland Highlanders) Regiment of Foot Argyll and Sutherland Highlanders
Answer: Royal Regiment of Scotland