Neither will the average "he" either, of course.
Also, hands up who here has been on a "fireswept battlefield". Nobody? How about how many soldiers ever have been? Also vanishingly few, you say? Funny that.
Just because places like Iwo Jima have historically happened, doesn't mean they are anywhere near to the norm or that it is sensible to train to that ultra worst case scenario. Also, behaving as if all war is like a Transformers film on crack - as some are inclined to do - doesn't really help the military in any way.
Example: there are plenty of trades, units or disciplines in the military who get lost in the worst case (usually also the most ally) potential of the job, and so focus their kit, recruitment, training and chat on that. This sounds, to a degree, sensible: except that it often means that the normal running elements of the job, which they actually do day in and out, and which may be the most important part, get ignored. The result is that they are great at stuff they never do, but less than spectacular at their core job. The classic example is recce type units who spend all their training time on contact drills, and little to none on recce skills. There are others. I'm sure anyone with a bit of experience who has been in recently can think of units who big time the mechanics or sexy bits of the unit, but aren't actually much hack at their core role.
Fitness is like that. Training to the ultra worst case scenario all the time just breaks people. Tailoring it to reality is a sensible approach.
By the same token, hands up anyone peddling the concept of gender-neutral testing and mixed GCC units who's actually been up against a first class enemy with comparable artillery assets and aviation, much less been over-matched.
You can forget bullet-swept anything, the wheels will have come off long before then, probably when faced with that fundamental infantry survival requirement of being able to dig in at high speed.
Sadly, the current approach equates to using the Zulu War to anticipate the requirements for fighting the First World War and to career foul anyone who suggests that this might be a bad idea. The only difference in the whole affair being that we beat the Zulus.