Longman Dictionary of Contemporary English
Wiktionary
vb. 1 (context intransitive military English) to march at double time. 2 (context transitive military English) to order troops to march at double time.
Wikipedia
In music and dance, double-time is a type of meter and tempo or rhythmic feel. It is also associated with specific time signatures such as . Contrast with half time.
In jazz the term means using note values twice as fast as previously but without changing the pace of the chord progressions. It is often used during improvised solos.
"Double time [is] doubling a rhythm pattern within its original bar structure.":
1 2 3 4
1 2 3 4 1 2 3 4
Usage examples of "double-time".
Coastpoint Guards, using their hangovers as a tool for rejecting more of the others, then set out, double-timing the march down the dirt path.
So they shipped him here to Camp Brezhnev, double-time, to grind the new recruits through the boot camp meat grinder and kill off the chaff.
We'll double-time out to the edge of the Coachella Canal, and get in some quality training time.
The flatboats each had three crews of oarsmen to row double-time in sequential shifts, and the big boats fairly flew along the calm waters of the Lower Mutar and Lake Wum.
There was a rush on, but Murdock led the SEALs in a ten-minute double-time workout around the edge of the taxi strip.
A twin file of men double-timed out behind Foley and formed up with bayoneted rifles leveled.
It wasn't a proper square-more of a three-sided, hollow rectangle, short sides anchored on the north side of the Place of Martyrs-and it grew steadily as more men double-timed out of the North Way and slotted into position.
The troop doors opened and the ranks of troopers double-timed out, their weapons in their hands, Varlik carrying his camera in front of him, recording what he could from within the hurrying ranks.
They had all reached the end of endurance in double-time life, gratefully creeping back to quarters they had vacated two days and ten Turns ago.