Air defence is defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action."[1] They include ground-and air-based weapon systems, associated sensor systems, command and control arrangements and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries the main effort has tended to be 'homeland defence'. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence as are initiatives to adapt air defence to the task of intercepting any projectile in flight.

In some countries, such as Britain and Germany during the Second World War, the Soviet Union and NATO's Allied Command Europe, ground based air defence and air defence aircraft have been under integrated command and control. However, while overall air defence may be for homeland defence including military facilities, forces in the field, wherever they are, invariably deploy their own air defence capability if there is an air threat. A surface-based air defence capability can also be deployed offensively to deny the use of airspace to an opponent.

Until the 1950s, guns firing ballistic munitions ranging from 20 mm to 150 mm were the standard weapon; guided missiles then became dominant, except at the very shortest ranges.

The essence of air defence is to detect hostile aircraft and destroy them. The critical issue is to hit a target moving in three-dimensional space; an attack must not only match these three coordinates, but must do so at the time the target is at that position. This means that projectiles either have to be guided to hit the target, or aimed at the predicted position of the target at the time the projectile reaches it, taking into account speed and direction of both the target and the projectile.
Info are from Wikipedia.org
(header image done by vlado32)

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Post comment Comments  (20 - 30 of 103)
Black@Knight
Black@Knight Dec 8 2011, 5:28pm says:

I'm really love AA guns specially armored vehicle with rockets like Sam rockets ;)

+2 votes     reply to comment
DEAD_FiSH
DEAD_FiSH Oct 19 2011, 11:43am says:

I hate everything that can fly... That`s the reason for me to join.

+2 votes     reply to comment
GhOsT11
GhOsT11 Jun 23 2011, 5:48pm says:

I join this group cuz my father was commanding a truck mounted ZU-23-2 a real peace of art

+5 votes     reply to comment
Jack__Sparrow
Jack__Sparrow Jun 21 2011, 4:14am says:

Moddb.com if your a fan join!

0 votes     reply to comment
ıodɐɥs
ıodɐɥs Jun 17 2011, 4:26am says:

DON'T LIVE GLOBAL LIBERATION ARMY!!

+2 votes     reply to comment
tigershadow
tigershadow Jun 16 2011, 9:55pm says:

Hey let me me tell y'all my story why I hate Aircraft. I bet most people have heard of the game R.U.S.E. Well i was playing as the german faction against the British. So i had amassed some panzer IV's and 2 Tigers. Well they were rolling along and I had destroyed a secondary HQ. Them The AI went ballistic and sent all of their Fighter-Bombers and destroyed my army. Whenever I play a skirmish against the AI, they spam fighter-bombers EVERY TIME. There is no good mobile AA weapon except the Wirbelwind and prototype AA guns. But its always the fighter-bombers that stop my advances. Finally, in one match there was a huge town in the middle of the map, so i dropped some paratroopers(Yes, the para's were transported by planes)in the town, I controlled the town, and the enemies could not see them, that was good, so my ally's tanks could roll thru and not get destroyed by ambushes, and get to the enemy bases, but then, that all ended. One scout plane, one frikkin scout plane from the enemy flew over, then the enemy unleashed their artillery on my infantry, they all died, then enemy tanks rolled thru and destroyed me and my ally's base. so yeah i hate aircraft.

+3 votes     reply to comment
Black@Knight
Black@Knight Dec 8 2011, 5:25pm replied:

Hahaha
you r good a story teller :) good luck with your fights :D

+2 votes     reply to comment
ℱℓσℊℊℯɾ✈ Creator
ℱℓσℊℊℯɾ✈ Jun 17 2011, 7:00pm replied:

LOL i actually love both i know that my avatar is a MIG23 aircraft but still i love both

+3 votes   reply to comment
GoldenArbiter
GoldenArbiter Mar 31 2011, 6:48am says:

this is sweet... i am so joining...

also, i notice a distinct lack of the Gepard...

+2 votes     reply to comment
Smallchange Creator
Smallchange Mar 30 2011, 11:05pm says:

OMG... this group has 144 images :O

i did not think it had that many...

+2 votes   reply to comment
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