His Soldier Under Siege by Regan Black

She’s the soldier. But he’s the only one who can protect her...

When army nurse Grace Ann Riley is framed for a heinous crime, the shell-shocked major is unsure where to turn. Enter her no-strings-attached lover Derek Sayer, who resolves to help her disprove these allegations. Derek works to exonerate Grace Ann while trying — and failing — to keep his growing feelings at bay. He’ll stop at nothing to keep her safe — even if that means risking his life.