Honored with a 20th century legendary blade

[Joshua]

I believe the dagger was first introduced in 1941 and issued to the Royal Marines, don't know if they had any official connection with any Highland regiments

(Slight tangent due to some of my own personal research for a friend upon the passing of his father in 2010, I know you said "Highland Regiments" but I wanted to place context regarding an American Marine having a British fighting knife...)

Prior to the creation of the K-BAR USMC Fighting knife, certain US Marines (especially Raiders) carried and used the Fairbairn-Sykes. Eventually they even had their own USMC, replicas of the style made - as this one, carried by my best friend's father through the volcanic sand of Iwo Jima:



And a little snippet from Wikipedia regarding how this whole thing came about...
"The history of the U.S. Marine Raider Stiletto began at the Commando Training Centre in Achnacarry, Scotland. The stiletto was patterned after the Fairbairn-Sykes Fighting Knife, which was in use at the centre before the arrival of the Marine Raiders."

The FB is a bit longer, so I'm sure it would suffice better as a Dirk. This particular knife is too long to be a sgian dubh, and too small to be a dirk.