The story is well written, but I had a hard time meshing the two major plot lines together -- the erotic scenes seemed rushed and forced, and the tragic situation seemed to draw a reader's attention away from any erotic elements -- tricky to pull off.
It might have worked better going in one direction or the other.
I found this part particularly confusing:
"It's not much—" she gestured at the sad little cot positioned on the larger side of her tent "—but if it makes you feel any better, you won't be sleeping much." Her equally abysmal bed was just through the zip-up barrier that divided the tent in two. "I'd set up the other doctor's tent for you but we recommissioned it for a women's unit."
Ed nodded and turned to see her disappearing through the flap. "C'mon soldier!" he heard her call from outside and he dumped his pack in his haste to follow her.
She came to him that night. He hadn't even considered the possibility when he'd finally collapsed in his cot worn out from the day. She climbed on top of him as his eyes opened to her blurry form silhouetted against the glow of the flood lights outside.
Did Ed follow Oriel into her side of the tent? What happened? Who knows? And why was he back on his cot when she returned?