In heat like that your perspiration evaporates instantly so you don’t know you are losing hydration. One minute you feel fine the next you’re out like a light on the ground.
Saw a fair amount of it during two sessions of desert warfare training in 29 Palms.
I trained at 29 Palms/Ft. Irwin years ago in 113 degree heat. We followed the Israel prescription of downing a quart of water every half hour. Even if I didn’t feel thirsty, that quart went down easily. We kept the heat strokes down to a minimum.
First trip to the stumps I and my bros had stayed at the E-club until closing the night before.
I was still throwing up at morning formation.
Got off the bus at the stumps with a hangover so bad I wanted to die.
My First Shirt was laughing his ass off at me, told me we were forming up to step off for a special 10 mile forced march in my honor. That’d fix the hangover real good.
I was not a popular person during that particular training deployment.
Thank the Good Lord I was in the infantry and there’s always someone in that crowd doing something stupid so my stupidity was quickly over written by someone elses.