From what I remember the ones with the marlin spike are the Royal Engineers specific knives.
As the Engineers are more likely to be using ropes for some of the exploits or used to anyway.
The Engineers knife was better known as the "Jack" knife
https://jboutman.com/itemdesc.asp?ic=3PCJACK
Silvermans sell them
As the Engineers are more likely to be using ropes for some of the exploits or used to anyway.
The Engineers knife was better known as the "Jack" knife
https://jboutman.com/itemdesc.asp?ic=3PCJACK
Silvermans sell them