The Covenant historically have always had superior ships to whatever faction they chose to engage with. With their enormous superiority they have found that the need for planetary defences has been negligable and as such have never employed them on any worlds.
Things changed though with the beginning of the Human-Covenant war, never before had the Covenant faced a faction that employed covert ops. Spartan teams numerously and effectively found their way into Covenant held space and inflicted massive damage. Realizing that combating the Spartans on the ground was suicide the Covenant began employing planetary squadron defences that could take out large strike craft or numerous drop pods, a tactic employed often by the UNSC. These defences had great effect and forced the UNSC to consider new, less direct approaches to covert op missions.
Weapons and Tactical Usage
You should place these near your structures to minimize the effect of enemy bombers. The squadrons are also very effective so it is a viable tactic to make your entire defence up of Hanger Defences, 16 squadrons or more is very hard to combat and also offers you a lot of resistance to Flood invasion. The Phasic Trap ability is also very useful for protecting your buildings from Flood fighters while your own fighters take them out.
|Strikecraft||Seraph Bomber • Banshee Interceptor|
|Combat vessels||CRS-class light cruiser • CPV-class heavy destroyer • RCS-class armored cruiser • CCS-class battlecruiser|
|Support vessels||DAV-class corvette • DSC-class support ship • SDV-class corvette • DDA-class shuttle • CAR-class frigate|
|Capitals||ORS-class heavy cruiser • DDS-class carrier • CAS-class assault carrier • DOS-class supercruiser • OSS-class battlecarrier|
|Other||Tradeship • CCD-class Constructor|
|Obsolete vessels||Redemption-class Battleship • Seraph Fighter|