Top Trump military adviser says US must prepare to fight around moon

American troops need to prepare for combat not only in Earth’s orbit but around the moon, Donald Trump’s top military adviser said on Wednesday, looking ahead to a new frontier in warfare after the US revealed for the first time that it has deployed weapons in space.

Gen Dan Caine, chairman of the joint chiefs of staff, told service members and industry figures at the Air, Space and Cyber Conference outside Washington that the US military should adapt now so it “is prepared to fight, endure and win ... from the seabed to cislunar space”.