Sentinel Wars

"In the beginning, the Sentinels were just targeting mutants. Then they began to identify the genetics in non-mutants who would eventually have mutant children and grandchildren. Many of the humans tried to help us, but it was a slaughter. Leaving only the worst of humanity in charge. I've been in a lot of wars. I'd never seen anything like this."

- Logan to Charles and Hank

The Sentinel Wars were a long conflict between the man made mutant killing robots known as the Sentinels and The X-Men. The war was averted when the X-Men sent Logan to the past averting the creation of the Sentinels and ending the war before it began.

Pre War Events

 * Raven Darkholme also known as Mystique assasinates Bolivar Trask
 * Mystique is soon caputured and experimented on before eventually escaping however scientist already have her DNA to make the Sentinels able to adapt to mutant powers.
 * The Sentinels begin to target humans who are most likely to have mutant children
 * The X-Men fight a losing war with Shadowcat using her abilities to send fellow mutant Bishop back into time to stay ahead of the Sentinels.