Seeking His Command opens the Intricate Ties series and is the natural place to begin. It runs to a little under five and a half hours, which is part of its appeal: one long evening, or a couple of commutes, and the whole arc lands.
Tyler Laux narrates, and the performance matters more than usual in a story this interior. He keeps the register low and unhurried, letting the pauses carry weight that a more theatrical reading would flatten, and he handles the quieter, more vulnerable exchanges without a trace of archness. The early listener scores are strong.
If you want a self-contained introduction to the softer, more careful side of MM romance, one that leaves you somewhere kinder than it found you, this is a sound place to try it. The audiobook is listed just below, with its running time and rating.