Opening with a strange piece of fiction about death and beyond, Why We Fight, this supplement seeks to dig deep into the very soul of the order of mages called the Adamantine Arrow. Mages of this order are not just warriors but more, they wish to dig deep to understand the philosophy of conflict, and fight with weapons and their arts, seeing combat as the way to truth and enlightenment. Hence members of this order do not merely Awaken, they are then forged into potent weapons, combatants with a burning desire to win... or die trying.
Chapter 1: The Smoke from Distant Fires looks at the history of the order from the earliest times right up to the present. Like all warriors they have many legends of past glories to recount. It sweeps from the days of Atlantis itself, developing the core theme that existence itself is conflict. Wherever there is conflict, there you will find Arrow mages. Some say they have formented wars through the ages, others hold that they have just taken advantage of something ordinary mundane mankind is pretty good at engaging in for itself. One thing though, they detest cannibals. They'll always seek to stamp out that vile practice wherever they encounter it. Throughout the sweep of known history, often written in blood, you will find the Arrow.
Next, Chapter 2: Sown From the Dragon's Talons seeks to explain the philosophies, beliefs and practices of the order. Here we read of the Admant Way - symbolised by a hand grasping a thunderbolt - which speaks of great power and the universe as a weapon wielding by a mage's trained hand. Understand this, and you begin to understand what makes this order tick.
Then Chapter 3: Among Warriors delves into what it is like to be a member of the Arrow. To start with, unlike most orders, constant study and a 'mystery cult' approach does not apply here. No secret handshakes or constant initiation rituals... the idea is that members ought to be out there doing rather than reading or performing ceremonies. This is the underlying difference in philosophical approach, and it's key to understanding the order. Of course, mages still have to be accepted for membership, and to remain in good standing once in. There's an interesting discussion about Awakening - who is likely to Awaken and what sort of events provide the opportunity - which raises some interesting possibilities, and a look at what the order seeks at different stages of a prospective member's career as a mage. Initial initiation, whether sought when newly-Awakened or later on, is quite a lengthy process and both mage and order will have a good understanding of the other by the time it is concluded. It's detailed at length, sufficient to play out if desired although generally a fully-generated character is regarded as having already joined the order of their choice. Alternatively, some groups may want to play 'recruiters' and oversee the initiation of other (NPC) mages. Like any organisation, once in members can gain rank and recognition, and this is laid out in detail. There's also quite a lot about the principles on which the order is run and how they are handled on a day-to-day basis, complete with examples: everything you need to construct Arrow society in a meaningful way in your game. For Storytellers, this is useful even if no character wants to join the order, you can make NPC members come to vivid life. Notes on how to handle cabals that are all or partly composed of Arrow members, or have a single one, and Arrow relationships with other orders and other kinds of supernatural beings are also included.
This is followed by Chapter 4: Factions and Legacies which talks about the various groups with which a member of the order can ally and the different paths that he can follow. The preceding chapter rather gives the air of a unified purposeful order and whilst that is mostly true there are of course a multitude of ways in which individual members group to pursue common aims... and even add in aims of their own into the mix. There are three main factions, but each contains several cults (as they term legacies) that faction members may adhere to. Plenty of detail, plenty of choice.
Chapter 5: Magic discusses the ways in which the Adamantine Arrow uses magic, based on the underlying principle that existence itself is conflict. Tactics, new spells and ideas on the practical application of magic to further the order's aims are to be found here, with the discussion ranging from the philosophical ideas to actual rotes ready to be learned and used. Artefacts and relics are included as well.
Finally, an Appendix contains a goodly collection of ready-made Arrow mages - friends, rivals, or foes as appropriate. There is a wide range of different folk, you will be fairly certain to find one who meets your needs.
Overall, this book gives an excellent look at the Adamantine Arrow and is essential reading if you want them to feature in your Chronicle, or have characters wanting to join the order. There's the usual confusion, that this is far more knowledge than most characters will have, even those who are members (unless very senior ones), but provided players are good at keeping in-character and out-of-character knowledge separate, or the Storyteller doles out information as needed, it should not cause a problem. An entertaining and informative read, broadening your knowledge of the world of Mage: The Awakening.