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A dot beneath an arc inside a unit frame.
Also known as: Air defence symbol, Anti-aircraft icon, Dot under an arc
In NATO joint military symbology a filled dot with an arc arching over it denotes air defence artillery: guns or missiles directed upward against aircraft.
Denotes an air defence unit, the arc over the artillery dot indicating fire directed upward.
Contexts: Maps
Extends the artillery icon by a single element, which is how the standard derives specialised branches from general ones.
Contexts: Maps
A solid dot with a curve arching above it like an open umbrella, both centred inside the frame.