The band's current lineup consists of vocalist Jesse Leach, guitarists Joel Stroetzel and Adam Dutkiewicz, bassist Mike D'Antonio, and drummer Justin Foley.

He was replaced by Jones, and Killswitch Engage rose to fame with its 2004 release The End of Heartache, which peaked at number 21 on the Billboard 200 and was certified gold by the RIAA for over 500,000 shipments in the United States.

Although initially the album was not a financial success and did not land on any charts, it attracted the interest of Carl Severson, who worked at Roadrunner Records at the time.

A music video for the single "My Last Serenade" increased the band's exposure, and the album peaked at number 37 on the Top Heatseekers chart.

Philip Labonte of All That Remains tried out for lead vocals but lost to Jones, who had to quickly memorize seven songs for his debut at the 2002 Hellfest.

Touring continued through the New Year's Day, and in 2003 the first song to feature Jones, "When Darkness Falls", appeared on the soundtrack of the 2003 horror film Freddy vs.

[20] "The End of Heartache" became the main single for the movie Resident Evil: Apocalypse, and in 2005 the song was nominated for Best Metal Performance for the 47th Grammy Awards.

In late 2004, The End of Heartache was re-released as a special edition album, with a second disc featuring various live performances, a Japanese bonus track, and a re-recorded version of "Irreversal".

During the summer of 2005, the band returned for Ozzfest, and on November 1, 2005, Alive or Just Breathing was re-released as part of Roadrunner Records' 25th anniversary.

[22] Recorded in three months, As Daylight Dies was released on November 21, 2006 and peaked at number 32 on the Billboard 200 chart with 60,000 sales in its first week.

[30] Due to Dutkiewicz's back problems in early 2007, he was replaced by Damageplan and The Mercy Clinic frontman Patrick Lachman during the No Fear Tour.

[31] Dutkiewicz recovered and was able to finish the No Fear tour, and the band began filming its video for As Daylight Dies's second single, "The Arms of Sorrow".

On August 6, 2007, Dutkiewicz was forced to leave the Warped Tour so he could fully recover from his back surgery and continue daily physical therapy.

"[34] From March to May, Killswitch Engage was a part of Disturbed's Music as a Weapon IV festival along with Lacuna Coil, Chimaira, Suicide Silence, Bury Your Dead and more.

[36] In July and August, Killswitch Engage took part in Mayhem Festival with headliners Marilyn Manson, Slayer, Bullet for My Valentine and others.

[40] The band was later added as late replacement to 2010's Download Festival in June, after original sub-headliner, Wolfmother could not attend as scheduled.

[43] Justin Foley provided the drum tracking for the band Unearth on their album "Darkness in the Light", released on July 5, 2011.

[44] D'Antonio started the hardcore band Death Ray Vision, with Shadows Fall vocalist Brian Fair and former Killswitch Engage guitarist Pete Cortese.

In an interview with FTC, Gun Shy Assassin, Mike D'Antonio had stated that the band was currently in the works for a sixth studio album.

"[46] On December 1, 2011, Mike D'Antonio posted online that Killswitch Engage should be entering the studio around February/March 2012 to record their sixth album expected around summer 2012.

Later, the band took part in Metal Hammer's "Trespass America Festival" headlined by Five Finger Death Punch with additional support from God Forbid, Emmure, Pop Evil, Trivium and Battlecross.

As I Lay Dying was originally supposed to be on the tour but dropped due to criminal charges from frontman Tim Lambesis.

The band did a small headliner on the east coast for Halloween 2014, with All That Remains, Death Ray Vision and City of Homes supporting.

On August 30, 2017, the band announced on their Instagram page that they were in the process of demoing material for their upcoming eighth studio album.

[65] The band cancelled their tour dates from April 26 to May 5 due to the need of vocalist Jesse Leach undergoing surgery on his vocal cords.

[68] On August 20, 2019, the band released their music video for Atonement's third single "The Signal Fire", the song they recorded with former frontman Howard Jones (now of Light the Torch).

The EP was released on Bandcamp and sold as a "pay what you want" price, with all proceeds going to the Center for Disaster Philanthropy's COVID-19 Relief Fund.

[87]On Killswitch Engage's 2009 self-titled album, Howard Jones states the change in lyrical themes: I've got enough to draw on to write some stuff that can be dark.

[88] Killswitch Engage's influences include Van Halen, Black Sabbath, Fear Factory, Carcass, At the Gates, Machine Head, Neurosis, Metallica, Iron Maiden, HIM, Megadeth, Suicidal Tendencies, Anthrax, Slayer, Testament, Bad Brains, Agnostic Front, Leeway, and Sick of It All.

"[95] Bands like Bring Me The Horizon,[96] The Word Alive,[97] Rise To Remain[98] and Miss May I[99] cited Killswitch Engage as an influence.