Then how do you explain that the Army is also expert in disease research, cures, and helping in disease and emergencies, and maintains a strong international presence in WHO operations and medical research, and receives much assistance from the Navy in it's global medical operations in infectious diseases?
Are you assuming these are the folks being sent vs. "other" troops, or have you seen it mentioned? I haven't seen any indication that we are sending experts in medicine/disease (could have missed it), and most of the stories surrounding it do not seem to think this is the case or they would not be so outspoken against it.
Will grant that not all troops are combat troops, but the sense I have been getting is that many of those who will be sent are not "designed by training" for the role they will be filling.