Below is the official description of the group:

The Shady Corporation, also known as the “Shady Corps” is a rap group. It is modeled after the “Marine Corps”. In the fashion of training and preparing for war. In this case the war referred to is the war between real Hip Hop and the “Culture Vultures” (people out to exploit the culture).

The Shady Corps is comprised of Pacewon (from the “Outsidaz” and “Pacewon and Mr. Green” fame) and several M.C.’s and producers. The “Shady Corps” is also an Eminem tribute band. Honoring and celebrating real hip hop while carrying on the tradition set forth by Eminem of out spoken, witty, saavy, and insightful lyrics… Also what Pace likes to call “nifty lyrics.”

Eminem was also a member of the group “Outsidaz.” They share a history that is mostly documented in their songs. For instance on “Fine Line” Eminem explains conditions of their early days in the music industry.

Although Pace doesn’t mention it here, he has also worked with notable artists such as Royce 5'9" which ultimately led to some rap beef that can be heard on tracks such as 5'9" + Won.