[quote]Why did the covenant attack humans[/quote]When the Covenant discovered humanity, it became apparent to the three soon to be hierarchs that humanity is the true heirs to the Forerunner legacy. They knew this would destabilize and ruin the Covenant, so they told a massive lie, that humans were defilers of Forerunner relics, and waged a war of genocide to cover up the fact their religion was false. [quote]how come in an academy full of soldiers and generals and cadets fall in minutes to a squadron of sangheli ??[/quote]It wasn't just a single squad. Many more troops were deployed. Additionally, the Covenant actually arrived a few days before they attacked Circinius IV, and had ample time to observe the planetary defenses and patterns. [quote]when seems goes up the tether, or lift, doesn't it have to go into a ship?? If so why didn't they attack the covenant ships??[/quote]Not all ships are warships. And up until that moment, the location of the Covenant Corvettes was unknown.