Space Marines: Jump Pack Intercessors

Space Marine Jump Pack Intercessors are rapid airborne assault troops who use powerful jump packs to soar over the battlefield, delivering devastating, close-range attacks with chainswords and heavy bolt pistols. They are selected from the most aggressive members of their Chapters to strike vulnerable points deep within enemy lines.

Role and Tactics
Jump Pack Intercessors are a fast-moving close support unit that provide a rapid response and assault capability to Space Marine armies. 
Rapid Deployment: Their primary advantage is mobility. The jump packs allow them to leap over obstacles, traverse the battlefield quickly, and arrive in the thick of battle to perform an immediate, aggressive charge.
Shock Assault: They act as a hammer blow, using the mass of their power armour and the velocity of their descent to crash into the enemy, often catching foes off guard before they can react.
Versatility: While primarily melee units, their speed and the Deep Strike ability (a tactical deployment option in the game) allow them to seize uncontested objectives, screen their allies, or quickly engage specific enemy units. 
Wargear
Jump Pack Intercessors are typically equipped for brutal close combat, but their weaponry can be customized for specific tactical roles. 
Standard Armament: Each Intercessor is typically armed with a heavy bolt pistol for point-blank fire and a roaring chainsword for melee combat.
Sergeant Options: The squad Sergeant has access to a wider armory, including a choice of a hand flamer or plasma pistol, and a potent power sword or power fist.
Special Weapons: One regular Intercessor in the squad can replace their heavy bolt pistol with a searing plasma pistol, providing an anti-armour or elite-killing edge from a distance.
Jump Pack: They wear a specialized, detachable jump pack that is based on the design of those used by Inceptors, featuring grav-chutes for maneuverability and controlled descent.