Human

The Human Race is an early-Development Space Faring Civilization whose home world is Earth, located in the Sol System. In the 2500's they met the Covenant, a deeply religious, xenophobic group of Extra Terrestrials. They have been at war ever since, using their collective knowledge along with their main military force, the UNSC

By the time of the events of Halo, there are approximately 60 billion humans populating the galaxy, although numbers may be greater or smaller.