Republican presidential candidate Jeb Bush elaborated Wednesday on his proposal to put a limited number of U.S. ground troops in combat against the Islamic State.

One day after the Florida governor told Bloomberg's Mark Halperin that the U.S. is "going to have to have ground troops" to fight the terrorist group, Bush, speaking at The Citadel, a military college in South Carolina, said the U.S. should immediately go beyond the bombing sorties already underway in the region.

"The United States — in conjunction with our NATO allies and more Arab partners — will need to increase our presence on the ground," Bush said.