Henry, who was a standout player and coached under Bielema at Wisconsin and Arkansas, respectively, makes the move to Champaign-Urbana after SEC, ACC and Big Ten stops at Vanderbilt, North Carolina State and Rutgers.
Buh brings 23 years of collegiate coaching experience to Champaign-Urbana including four different stops as defensive coordinator in three Power 5 conferences.
One of the nation's top young coaches, Walters comes to Illinois following six seasons at Missouri, including three years as the Tigers' defensive coordinator and two years as co-defensive coordinator.