Homeworld Warrior Caste System (GA)

"The finest army of them all, my diamond. With all these obsidians, those rebels shall be CRUSHED TO BITS!

Good job, Obsidian, I'll inform Wurtzite about this. You might get a promotion..."

WARNING! CANON AND FANON SPOILERS AHEAD!
The Homeworld Caste system is quite intriguing, with Diamonds, Quartzes, Corondums, etc. One of the most important ones are the Warrior Caste system.

Caste System
Homeworld maintains a strict caste system, with each type of gemstone having a predetermined role and place in the social pyramid, each with their own privileges and ordained purposes. Any Gem, who, in any way, digresses from their role, be it intentional or not, would be considered defective. Because there are so many of one type of Gem, the Homeworld Gems — except the Diamonds — distinguish themselves via coded serial numbers.

In the caste system, one caste is a soldier caste. The caste is divided into different combat arms: Infantry, Cavalry, Artillery, Armory, Aviation, and Special Forces. Each of the combat arms are divided into sub-categories.

These are the different castes.