Kul Tiras City Guard

The Kul Tiras City Guard is an organization of Kul Tiras. Lorena was a member. Her father sponsored her application there. Over the years, she worked her way up the ranks. When Lorena was a rookie with the City Guard, she always used to drink the men in her barracks under the table. They started having contests with the other barracks, and Lorena was always the secret weapon.

Speculation
The Boralus Guard introduced in Battle for Azeroth is likely another name for the Kul Tiras City Guard.