The Department of Defense has released the names of five soldiers, including two Ohioans, who were killed in Baghdad on Monday, June 6.

They died of wounds suffered when enemy forces attacked their unit with indirect fire, the military's term for mortars or rockets. They were assigned to the 1st Battalion, 7th Field Artillery Regiment, 2nd Heavy Brigade Combat Team, 1st Infantry Division, Fort Riley, Kan.

Killed were: Spc. Michael B. Cook Jr., 27, of Middletown, Ohio; Spc. Robert P. Hartwick, 20, of Rockbridge, Ohio; Spc. Emilio J. Campo Jr., 20, of Madelia, Minn.; Spc. Christopher B. Fishbeck, 24, of Victorville, Calif.; and Pfc. Michael C. Olivieri, 26, Chicago.

On Monday, a barrage of rockets slammed into a base in a Shiite neighborhood of Baghdad, resulting in the deaths, the largest, single-day loss of life for U.S. forces in Iraq in two years.

The attack followed warnings from Shiite militants backed by Iran and anti-American cleric Muqtada al-Sadr that they would violently resist any effort to keep American troops in Iraq past their year-end deadline to go home.

Although American casualties have dropped considerably in the two years since U.S. troops pulled back from Iraq cities, Shiite militias have begun hammering U.S. bases and vehicles with rockets, rocket-propelled grenades and roadside bombs over the past three months.

The militants' goal appears twofold: to give the impression that they are driving the withdrawing U.S. forces out of Iraq, and to make the United States think long and hard before agreeing to any Iraqi request to keep a contingent of troops in Iraq beyond the end of the year.

Washington has been pressuring Baghdad to make a decision on whether it wants American forces to stay past Dec. 31 to help with such missions as protecting Iraq's airspace and training Iraqi forces.