@@ichigo9171 Basically, Sangheli (Elite), is one of the two founding species of Covenant, before Covenant is even a thing, they have a war against San'shyuum (Prophets), at first San'shyuum were having advantage due to having forerunner weapons, but as soon as Elite start to use sacred forerunner equipment, the war ended with a stalemate, eventually Both species realize if they keep fighting like this, both San'shyuum and Sangheli will gone extinct, so in the end they have a truce. That's just the beginning of the Covenant