AVENGERS #20 (1999)

Captain America, Iron Man, Thor, Black Panther, Firestar, and Justice meet with US military officials at the Pentagon and are briefed about how Ultron destroyed the military, the zombie soldiers, the Black Brigade, Ember and killed every citizen of Slorenia within three hours before declaring it would be the breeding ground for his new world. The plan is for the Avengers, minus Justice, to lead an international force in retaking the country.  At Nugent Technologies, Vision, Wasp, Wonder Man and Scarlet Witch investigate Hank Pym's disappearance and destroyed lab as Wonder Man relates Grim Reaper's kidnapping from the sanitarium. Suddenly, an explosion occurs and an army of Ultron robots attack the team. They put up a fight but are eventually captured and taken away.  As the one half of the Avengers await on ships over Norway, beneath the old parliament building in Slorenia, Ultron holds captive "his family" and says they will be the seeds for his new race.