 The 3rd Stryker Brigade Combat Team, 2nd Infantry Division along with members of the 2-505th 82nd Airborne Division, launched the offensive with a quick-strike night-time air assault early on 18 June 2007.By daylight, attack helicopters and ground forces had engaged and killed an estimated 22+ insurgents in and around Baqubah.In the early morning hours one soldier, from A co 1-12 CAV, was killed when his Bradley fighting vehicle was struck by a large deep buried mine just outside an abandoned clinic on the Southwestern edge of the city.