Invasion By Brian Michael Bendis Omnibus...: Secret

The final stand took place in Central Park. It was a sea of green skin against spandex. In the heat of the mud and blood, the heroes finally found their footing. But it wasn't a hero who ended the war.

It started with Elektra. When the leader of The Hand fell in battle, her body shimmered and shifted, revealing the green, chin-furrowed corpse of a Skrull. The Avengers stood over her body in a silence that felt like a death knell. The realization was a poison: Anyone could be a fake. Secret Invasion by Brian Michael Bendis Omnibus...

Iron Man looked at Captain America. Spider-Woman looked at Wolverine. The questions became a heartbeat. Are you you? Have I been sleeping next to the enemy? The Skrulls had spent years kidnapping heroes and replacing them with sleeper agents so perfect they didn't even know they were spies until a psychic "trigger" word was spoken. Then, the sky cracked open. The final stand took place in Central Park

It ends the "Initiative" era and launches the "Dark Reign" saga. If you'd like, I can: List the essential tie-in issues included in the Omnibus. Explain which characters were Skrulls the longest. Summarize the aftermath for Norman Osborn . But it wasn't a hero who ended the war

As New York turned into a war zone, the disparate factions of the Marvel Universe—the New Avengers, the Mighty Avengers, the Hood’s villain army, and Nick Fury’s Secret Warriors—had to make a choice. They couldn't trust each other, but they had to fight together, or there would be no world left to argue over.