A fifth Hawaii-based Stryker Brigade soldier has been killed in Iraq on the unit’s latest deployment, evidence that while violence is down, the war is far from over.

Sgt. David J. Luff Jr., 29, of Hamilton, Ohio, died Sunday in Tikrit of wounds suffered when insurgents attacked his unit with small-arms fire, the Pentagon said.

He was assigned to the 1st Battalion, 27th Infantry Regiment "Wolfhounds" of the 2nd Stryker Brigade Combat Team, 25th Infantry Division, Schofield Barracks.

U.S. Forces-Iraq, the American military command in the country, said in a news release that a U.S. soldier died from enemy fire during "advisory operations," but provided no other details.

The 25th Infantry Division said Luff had a wife and child.

His sister, Stacy Garrison, said Luff had deployed once before to Iraq, the Middletown (Ohio) Journal newspaper reported.

Luff was home in May when his wife, Katie Halcomb Luff, gave birth to their first child, a son named Aidan, the newspaper said.

About 3,700 Stryker Brigade soldiers are in northern Iraq on a yearlong deployment that began in June and July.

Four other Stryker Brigade soldiers have been killed — two by an Iraqi army soldier, one by a roadside bomb and one in a grenade attack on a vehicle.

Another 800 Schofield soldiers have started deploying to Iraq with the 25th Infantry Division headquarters. The bulk of the soldiers will leave after Thanksgiving.