Reprints Avengers #89-97 by Roy Thomas, Neal Adams, John Buscema, Sal Buscema, and Tom Palmer.

From the back cover:

Battleground: Earth!

Caught in the crossfire, Earth has become the staging ground for a conflict of star-spanning proportions! 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. This all-time classic is now presented in its entirety in a single volume for the very first time!