Space military! Kind of. It’s the military part that threw me a bit. They all have military ranks and a chain of command, but the way they interact and feel about each other is NOT military. I couldn’t decide if it meant the author just didn’t know what she was talking about, but then it occurred to me that their mission is a bit more Star Trek than military, and that shift made it work for me. I liked it. Planning to read more in the series.