Originally posted by Ganidiirsi O'Flynn:
IMTU the Imperial Marines have finally finished getting all Marines into TL 13 battle dress. Now it is a basic qualification to be an Imperial Marine, but prior to that they would operate with Combat Armor and Laser Rifles or Gauss Rifles with PGMP-13s as squad support weapons. The cutlass became a Marine staple because of the need to work on body positioning for the recoil of the PGMP's then in service.
Add to this the Navy officers wearing a sword in full dress uniform. Marines (of whatever nationality, whatever era) routinely consider Naval personnel nothing more than "Large Barge Drivers", about as useful as a bus driver in a bar fight. So, they went along with the full-dress-ironmongery idea with a heavier, more brutal weapon with long-held naval connotations. So, just like the Navy model gauss pistol has a long elegant barrel, and Navy swordsmanship is epee or foil tip work, the Marines adopted a more brute strength, slashing style to go with their more built up pistol. No standoff fighting here, Navy Puke!