Rangers are super heroes. Special Forces. Lol! They have to be able to survive on next to nothing or the integrity of the mission might be compromised.
If you ever notice... you'll see that they tend to be a touch 'round around the corners'.... it's can really help you to have a touch of cushion to pull from when you really need it. Some day they'll figure out how to genetically engineer some camel action directly into them.