An AGMO is a blob or spam of AGMO units. They usually annihilate anything within their site radius and can never die, not even from strafing runs. AGMOs are some of the most annoying units in the game to deal with.
(American rifle squads taken down in seconds by the oncoming AGMO)
German Player: "roflroflroflwtfbbq!!!!!! U lose n00b"