The shape of the fantasy
This is a rank-and-uniform story told in the second person. You are the bottom of the base, and Sgt. Diana Demont is the officer who pulls you out of the mud and decides you are hers. Everything that gives the premise its charge is structural rather than physical: she outranks you, she is married to the Colonel who sits above both of you, and the whole hook is being the only person who sees the woman rather than the uniform. It is a secret-affair setup in fatigues, and the risk of getting caught is doing most of the work.
Diana is a Candy character rather than a licensed likeness, so no performer is attached to her and nothing here was filmed. If that distinction matters, the credited performers are a separate and much smaller part of the catalogue.
What the free episodes actually tell you
The opening plays with no account and the second unlocks after a free signup, which gets you the recruitment and the claiming. That is the setup, not the consequences, but it is genuinely enough to judge the voice, the pacing and whether a superior-officer dynamic does anything for you. Watch both before spending anything. Details on what is free without paying.
Whether the rest is worth it depends on why you are here. This is one of the longest runs in the catalogue, three times the standard length, at the ordinary per-episode rate, so finishing it costs roughly four times what a typical series does on top of your subscription. If you want the tags and not the slow build, a five-episode series in the same territory is far cheaper. The length only pays for itself if the escalating affair is the part you want. Worth knowing too: these series tend to stop rather than resolve, and a premise built on a husband who owns everything promises a confrontation nothing guarantees you get. Check the token maths first.
Where it sits
The Milf and Nympho pairing places this on the aggressive, pursuing side of the catalogue rather than the slow-seduction side. Diana initiates, and the appetite is hers. What sets it apart from the rest of that group is the chain of command, which supplies a reason for the secrecy that most similar series have to invent. Note that infidelity is not among its tags despite the marriage being central to the setup, so the tagging is a poor guide to how much the husband actually figures.