Deep divisions are emerging at the top of the U.S. military over the course of the occupation of Iraq, with some senior officers beginning to say that the United States faces the prospect of casualties for years without achieving its goal of establishing a free and democratic Iraq.

Their major worry is that the United States is prevailing militarily but failing to win the support of the Iraqi people. That view is far from universal, but it is spreading and being voiced publicly for the first time.

Army Maj. Gen. Charles H. Swannack Jr., the commander of the 82nd Airborne Division, who spent much of the year in western Iraq, said he believes that at the tactical level at which fighting occurs, the U.S. military is still winning. But when asked whether he believes the United States is losing, he said, "I think strategically, we are."

Army Col. Paul Hughes, who last year was the first director of strategic planning for the U.S. occupation authority in Baghdad, said he agrees with that view and noted that a pattern of winning battles while losing a war characterized the U.S. failure in Vietnam. "Unless we ensure that we have coherency in our policy, we will lose strategically," he said in an interview Friday.