As a uniform, every soldier of the Second Army wears a kefta in the color of their order, which fulfills several functions, such as distinction between the different orders and being a symbol for being a Grisha and a member of the Second Army.
The soldiers of the First Army look at the members of the Second Army with mistrust and distance, knowing that most of the Grisha consider themselves as better than the "normal" soldiers. In return the Grisha of the Second Army detest the members of the First Army and regard them as weak, less gifted, inferior and less valuable.
In the beginning of the trilogy, the Darkling leads the Second Army, as he did it for hundred of years. Later, Nikolai wants Alina to lead the Second Army after they would defeat the Darkling. Having lost her Grisha abilities in the end of Ruin and Rising, Alina and Nikolai decide to have Zoya, David and Genya to share the leadership of the Second Army, so that every order would be represented.
There is a fear that the Second Army and Grisha power will become obsolete as other nations begin to industrialize.
- Main article: Grisha
Corporalki wear crimson kefta. Their power focuses on the human body. They are the highest ranking soldiers of the Second Army and also considered as the most feared. The order is divided into two types: Heartrenders and Healers.
Etherealki wear blue kefta. The order is divided into three types: Squallers, who can control pressure and movement of the air, Inferni, who can generate and control fire using a flint, and Tidemakers, who can summon and control water. Usually, they work and fight in pairs.
Materialki wear purple kefta. They are the least respected order due to having no use in a fight. Nevertheless, their products, such as Grisha steel, armor and blasting powders are very important for the Second Army. The order is divided into two types: Alkemi and Durasts.