Dierks Bentley, Lee Brice and Luke Bryan are among the artists joining the lineup for ACM Presents: An All-Star Salute to the Troops. Hunter Hayes, Toby Keith, Tim McGraw, Kellie Pickler and Keith Urban have also been added to the concert, which will take place in Las Vegas on April 7, one day after the ACM Awards.
LL Cool J and Chris O'Donnell will co-host the show, scheduled to air as a two-hour special on CBS on May 20.
Florida Georgia Line, Merle Haggard, Lady Antebellum, George Strait, The Band Perry and Carrie Underwood were announced as performers in February.
Proceeds from ticket sales will benefit ACM Lifting Lives, the organization's charitable program. Tickets for ACM Presents: An All-Star Salute to the Troops are priced at $105, $155 and $205.