"military device" is a correct and usable phrase in written English.
It can be used when referring to a tool, system, or technology used by the military. For example, "The new military device improved the accuracy of their weapons."
C4 Authorities in Singapore have adapted a military device that detects air passengers' body temperatures to help fight the illness's spread.
For purposes of this subsection, the term "military device" includes, but is not restricted to, shells, bombs, projectiles, mines, missiles, rockets, shaped charges, grenades, perforators, and similar devices lawfully manufactured exclusively for military or police purposes.
Looking for all the world like some kind of futuristic military device, the system attracted a small crowd of gawkers as it was wheeled onto the field more than four hours before game time.
Hours later, the authorities said, an old military device donated to a Goodwill store went off in an employee's hands at a strip mall south of downtown, injuring a man in his 30s and setting off another scare in a city on edge.
An unexploded military device discovered near a North Sea platform will remain there until the spring.
A top-secret, high-altitude military device used to detect Soviet atomic tests? .
A design of an Instantaneous High Power Supply System (IHPSS) with a power distribution management (PDM) for portable military devices is newly addressed.
The company's 25 W Amie25 fuel cell systems, fueled by globally available propane, can be used to power a wide variety of military devices.
The A powder continued in use for special purposes that required its higher quality, principally for firearms, military devices, and safety fuses.
They want to dominate the world with their high-tech military devices, but there is no individual collective might and spirit.
He said the "incendiary device" went off at the Goodwill store when an employee handled two old military devices left in a box of donated items.
