In the Fanfic "Fallout Equestria", the Steel Rangers split into 2 factions.



The 1st is the Steel Rangers, who more or less hoard all the old tech, and kill anyone who gets between them and the tech, even if the pony is currently wearing/using the tech.



The 2nd is Applejack's Rangers, who split off from the main group (roughly half), and live by the principles/values of what Applejack would likely have done in whatever situation. Basically, they lay down their lives to protect others. To differentiate themselves from the old Rangers, they painted Applejack's cutie-mark on their armor, often along with red highlights on other pieces of the armor.