Mr Trump - who tweeted "Space Force all the way!" on Thursday - and his supporters point to how adversaries such as China and Russian Federation are increasingly deploying satellites as proof that action is needed.
Speaking to reporters on Tuesday, Mattis said he was in support of the creation of a separate combatant command for space, adding that his department was in "complete alignment with the president's concerns about protecting our assets in space". Pence has been the administration's point man for space issues and the White House decided he should be the administration official rolling out the DoD report.
Watch part of Vice President Pence's space force address above, via Fox News. Pence said that the new military branch will be needed in order to protect American national security as the "space environment has fundamentally changed in the last generation".
The creation of the Space Development Agency.
The Pentagon report recommended that for now the unified command be in the hands of the Air Force, which currently oversees some of the most critical space-based capabilities.
"Recently, our advisories have been working to bring new weapons of war into space itself". The Space Force would initially be led by a civilian who would report directly to the Secretary of Defense, Pence said. Defence Secretary Jim Mattis said in a memo previous year to Senator John McCain, a Republican from Arizona, that he opposed "the creation of a new military service and additional organisational layers at a time when we are focused on reducing overhead and integrating joint warfighting functions".
The Space Force would be responsible for a range of crucial space-based US military capabilities, which include everything from satellites enabling the Global Positioning System (GPS) to sensors that help track missile launches. Space is vital to the way the United States wages war; The Pentagon's satellites are used for missile-defence warnings, guiding precision munitions, and providing communications and reconnaissance.
But the plan to create an entirely new branch of the service has rankled some in the Pentagon, who say it is unnecessary, and that the Air Force has for years looked after the nation's interests in orbit. "But history proves that peace only comes through strength".
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