The warrior mindset is pretty well described in sociological terms as a friendly in-group prestige competition for tribal males. Warriors are loyal, competitive, fierce, and motivated to seek heroic glory by accomplishing great feats with courage, skill, and strength. This sociosexual strategy is more common in faithful, lawless societies, but pockets of it can generally be found anywhere (ex. special forces culture in the otherwise faithless US).
I believe there is a sort of ideal warrior archetype that can emerge from this culture, where a warrior gets addicted to the chemical reward of glory. This is analogous to the genius personality that is caused by an addiction to creativity, and there are a number of similarities. In the case of the ideal warrior, an otherwise talented but normal warrior becomes obsessed with becoming an apex predator. Achilles and Musashi are two real-life examples, but you can find romantizations of the type fairly often in fiction (particularly nordic, Han Chinese, and Japanese).
For a while I thought this type of person might indicate an edenic race that we’ve been missing, but it makes sense that this sort of addiction could pop up in any hominid because fighting and fraternity go way back in the primitive consciousness. The archetypal such figure has the following traits:
1. Preternatural athleticism, strength, and robustness to injury. This is necessary for the idealism to be somewhat plausible.
2. Psychopathy- A relentless confidence in their ability to get out of any situation, combined with a complete lack of reasonable future planning.
3. Battlefield cunning, contrasted with hopelessness in the sociopolitical sphere. This is probably a result of the neurochemicals molding their brains over time, until they see all situations through a battlefield lens.
4. Idealistic ambition- Striving to become embody and manifest the traits of an envisioned ideal warrior. As the addiction metastasizes, realizing this abstraction takes emotional precedence over the pursuit of actual glory (among comrades in arms).
Such people are useful to have around but also very difficult to control, hence the story of Achilles, Odysseus, and Agamemnon. Odysseus would be the owl melon handler here, standing in for a special forces colonel, whose job is basically to keep Achilles pointed at the enemy (and let Achilles’ personality work out the details). Some warrior idealists break free from the reins and become something like warrior monk ascetics. When these guys purity spiral they actually become less dangerous in general because they’re only interested in increasingly difficult fights, whereas the state would prefer to use them as all-purpose, low-cost WMDs.
Musashi is a great example of this. He basically just trained and navel-gazed about tiger mindset in between duels, and wrote The Book of Five Rings about the mental habits of an ideal warrior (I wonder if the “five rings” bit is a rediscovery of chakras, or something like that). One of Tolkien’s kings in the appendices was like this, to the extent that he failed to produce an heir, but I can’t remember his name off the top of my head.
As this addiction progresses the warrior gradually loses interest in anything else except as a means to the end of achieving greater accomplishments as a warrior. This includes creature comforts like sex and good food. However, the upside of having such a rare level of skill, as with the phenomenon of genius, is that it can be used to overcome remarkably difficult hurdles on a regular basis with relative ease. So the warrior idealist rarely lacks for material things when he can be bothered to desire them, his skills being in such high demand.