Collecting AVENGERS (1963) #89-97.
A conflict of star-spanning proportions - with Earth caught in the crossfire! For those eternal intergalactic enemies, the merciless Kree and the shape-changing Skrulls, have gone to war, and our planet is situated on the front lines! Can Earth's Mightiest Heroes, the Avengers, bring about an end to the fighting before humanity becomes a casualty of war? And what good are even a dozen super-powered champions against the vast military machines of two of the great empires of the cosmos? The key to victory lies with the expatriate Kree Captain Mar-Vell and his human host, honorary Avenger Rick Jones! Featuring the trend-setting artwork of Neal Adams, the Kree/Skrull War is universally acknowledged as one of the finest and most important sagas in the Marvel canon.