On April 30, 2021, Keith Russ and Tel Koan, owners of fellow Champions Indoor Football (CIF) teams the Wyoming Mustangs and Billings Outlaws, announced launch of another CIF team to be based in Rapid City with their name, logo, and color scheme.

[2] On October 3, 2023, the Marshals announced their move to the revived Arena Football League and would play there starting in the 2024 season.

[3] The Marshals were one of several teams from CIF that merged with the AFL, with owner Wes Johnson conceding that he saw major warning signs with AFL Commissioner Lee Hutton making unattainable promises but had hoped that Hutton would deliver on half of what he promised.

Unlike the Iowa Rampage, which folded due to that lack of compensation, the Marshals remained committed to playing the season as long as possible in hopes of a resolution.

[6][7] The following week, the Marshals cancelled their newly-scheduled home game with the Southwest Kansas Storm on May 18th; after losing to the previously winless Washington Wolfpack on May 23, the Marshals folded the next day, stating that the labor issues the team faced were "insurmountable" despite the ownership's best efforts to keep the team together.