An aerial combat at short range is known as a 'Dogfight'.
They used a short sword called gladius. Because it was short and light, it was suited for close combat.
short-range aerial reconnaissance, texts, periodicals and technical papers
The phrase close combat typically means combat which occurs at very short range. Typically in modern times this is where close quarters combat and hand-to-hand combat training is vital for the armed forces.
QANTAS ( short for the Queensland and Northern Territory Aerial Service which is how it started out).
It's called Bluetooth.
The Demon Blade is very effective for short range combat as it fires two shots that will only both hit an enemy at close range, though the two shots together do more than your average sword.
short range rocket weapon
Wakizashi
The term combat stress refers to the psychological and physiological reactions that occur during or after combat. It is a short term response and is not a psychiatric disorder.
As a proper name (rather than a title) "Doc" is actually of Welsh origin and not short for anything - it's just a short name! It derives from "Madoc" or "Maddock". Sometimes used as a nickname too, for example Doc Holiday was really called John but he was a dentist hence his nickname.
A ground plane is use in radio where the wave length is less than 1 half wave. It produced a false ground (Earth plane) making an image of a 1/4 wave signal reflect on to the aerial creating a half wave image. This improves the efficiency or the aerial, extending it's range. Ground planes are used when the wavelength if the aerial is short or when the earth does not provide a good enough electrical path to ground. They can also be used to distort the polar pattern of the signal.