Rep. Houlahan questioned whether the decision to move AFRICOM headquarters out of Germany was being made in haste.
The potential move for AFRICOM was included in the Pentagon's plan to withdraw nearly 12,000 troops from Germany.
The potential for cuts comes just as U.S. Southern Command is seeing a worrisome increase in Chinese and Russian investment.
Space Command is part of a larger effort to operate in the space domain that was accelerated last June.
"We are the best in the world at space today," Gen. John Raymond, new commander of U.S. Space Command, said.
Gen. Stephen Townsend, who took over as TRADOC commander just over a year ago, was confirmed to take command of AFRICOM.
"We are going to continue to perform a lot of the mission for Space Command in the STRATCOM headquarters," Gen. Hyten said.
Pence said the command, which will be the 11th combatant command, is the stepping stone to creating a U.S. Space Force.
National Security Adviser John Bolton said the command should be headquartered in the region it covers.
Mattis and the outgoing SOUTHCOM commander praised the recent decision to send a U.S. Navy hospital ship to aid Venezuela.
New soldiers at Fort Sill were the first to graduate Army Basic Combat Training wearing the service's new Army Greens.
Air Force 1st Lt. Kenneth "Kage" Allen was killed.
Soldiers offered feedback on the Army's futuristic new IVAS technology.
The Defense Department is predicting flat or declining budgets in future years.
Preparations are underway across the Departments of Defense and Veterans Affairs to receive doses of a COVID-19 vaccine.