Zone Ennemie: Romance ennemis à amants (Sauvetage Trident t. 1)

The characters' internal conflict between their roles and feelings felt so authentic. I'm curious whether this was based on personal experience or imagination.

The shift from hostility to attraction was gradual and believable, which isn’t always the case in this trope. What moments made the switch feel genuine?

The backdrop added so much intensity and stakes to the story. I wonder if the author has personal experience with military life or did extensive research.