During WWII, and the fall of th Phillipines, to the Japanese, the nurses and their patients had to flee into the jungles. The few tents they had, were used to protect paperwork and files (not wounded servicemen or nurses). The patients and nurses slept under the elements, until they were eventually captured by the Japanese.
So, what you’re saying is that Nurse Hickox is not channeling any WWII nurse that you’ve ever heard of.