I don’t mean to sound insensitive, but
It was those soldiers duty (Job) and they knew that when enlisting that death was a possibility. Also, (if you’re not aware) we have an all-volunteer military so no gun was heald to anyone’s head and forced against their will to enlist.
It’s like being a Cop or a fireman, don’t sign up if you’re not ready risk your life to do your job, plain and simple. People die everyday of one thing or another it’s just a part of life.