Astartes, also known as the Space Marines, are elite super-soldiers in the Warhammer 40,000 universe. They are genetically enhanced warriors created by the Emperor of Mankind to protect humanity from various threats. Each Astartes belongs to a specific chapter, which has its own unique culture, traditions, and combat styles. These warriors are equipped with advanced power armor and a variety of weapons, making them formidable on the battlefield. Astartes are known for their unwavering loyalty and bravery, often leading the charge against the enemies of the Imperium, including Chaos, Orks, and Tyranids.