Just a bit of curious question here since I've been parsing some new Minmatar lore and their spiritual aspects. From what I've read the Minmatar spiritual beliefs seem to be premised on a duality between the material/spiritual worlds that exists at the same time and which varies between Tribes. For the Sebiestor this appears to be a totemic tradition with blessed objects serving as a connection to their spirits/ancestors and with the Vherokior their tradition appears to be similar to the Voluval where tattoos and markings on the body serve as the connection to their spirits/ancestors.
For the Brutor I couldn't find much but there was a piece in the Kameiras chronicle:
In the aftermath of battles, Kameiras gather what bodies they can of their fallen and burn them in great funeral pyres. This is done in a matter-of-fact way, without emotion. Once the fires have burnt out the surviving Kameiras cut themselves and then rub the ash from the pyres, the ashes of their dead brethren, into their open wounds. In this way, a permanent mark is formed. The Kameiras carry their dead with them, and the mark serves as a lasting reminder of those who fell. An old soldier may have many scars of the lost covering his body and in this way can come to look akin to his free Minmatar brethren
Emphasis mine. The Brutor are variously described as, "Immersed in ancient martial traditions that begin at childhood" and, "A martial, strong-willed people," So I'm curious if the practice described isn't actually a Kameiras tradition but an aspect of Brutor tribal spirituality? As in the physical scars created by the ashes of the dead that they burn on funeral pyres are the Brutor's physical connection to their own ancestors/spirits?