Covenant ships are much more advanced, man loses almost every space battle Despite massive losses compared to covenant in space battles, harvest and Coles fleet are an excellent example, the unsc and its propaganda lie and say we are winning to boost moral One by one earths colonies fall The covenant find reach and invade with one of the biggist fleet witnessed as of this plot point Pulled of autumn escapes with master chief and cortana onboard As per procedure of Cole protocol, the pulled uses slip space and goes to a random location to not give away earths location should covenant follow, The killed stumbles across halo ring