Marshall has agreed to join the Sun Belt Conference, as the Thundering Herd become the third Conference USA school to make the jump in the past week.
Both Marshall and the Sun Belt sent tweets Friday related to the school’s addition.
No timeline has been set for Marshall to make the move to the Sun Belt, but Southern Miss and Old Dominion — the two other schools moving over from Conference USA — are set to join no later than July 1, 2023.
Also on Friday, James Madison — an FCS powerhouse that won the national title in 2016 and has made two title-game appearances since — took steps to join the Sun Belt. The school’s board of visitors executive committee passed a motion to pursue moving up to the FBS level and seek an invitation from the conference.
The Sun Belt would reach 16 schools and 14 football programs if all the additions go through. It is focusing its expansion push on strong football programs within or near the league’s footprint, rather than those in large metropolitan areas.
Following the departures to the Sun Belt and the planned moves of six other schools to the American Athletic Conference, Conference USA will be left with only five members: Western Kentucky, Middle Tennessee, Florida International, UTEP and Louisiana Tech. Conference USA commissioner Judy MacLeod has said the league is pursuing new members, including FCS schools that are considering making the move to FBS.
Marshall had been a member of Conference USA since 2005.
ESPN’s Adam Rittenberg and The Associated Press contributed to this report.