Probably more for cutting the parachute cords and general utility. The navy issued short blade 5–6-inch knives to crewman on ships for general utility also. Not all were specifically for fighting knives. Those were generally the 7" Kabars and M3 knives.
I've used one of the current model survival knives for years as my deer hunting knife. At least it was the current model 30 years ago. Not sure if it still is or not.