General term describing Personal wearable infantry equipment. Destroyer Suits are generally the heavy engagement version. As an example the Main Battle Suit (MBS) System SII-MK XII in Standard Infantry Configuration, nicknamed and better known as "Quasimodo".
However suits of other manufacturers and other species Battle suits used in similar roles are also often called Destroyer Suits.
Destroyer Suits usually emphasize on offensive weapon systems with reduced armor and shield capacity than for example Command, scout or recon versions.