BAGHDAD  The case of a freelance photographer in Iraq who was barred from covering the Marines after he posted photos on the Internet of several of them dead has underscored what some journalists say is a growing effort by the American military to control graphic images from the war.

Zoriah Miller, the photographer who took images of marines killed in a June 26 suicide attack and posted them on his Web site, was subsequently forbidden to work in Marine Corps-controlled areas of the country. Maj. Gen. John Kelly, the Marine commander in Iraq, is now seeking to have Mr. Miller barred from all United States military facilities throughout the world. Mr. Miller has since left Iraq.

If the conflict in Vietnam was notable for open access given to journalists  too much, many critics said, as the war played out nightly in bloody newscasts  the Iraq war may mark an opposite extreme: after five years and more than 4,000 American combat deaths, searches and interviews turned up fewer than a half-dozen graphic photographs of dead American soldiers.

It is a complex issue, with competing claims often difficult to weigh in an age of instant communication around the globe via the Internet, in which such images can add to the immediate grief of families and the anger of comrades still in the field.