Two men have agreed to plead guilty to conspiracy charges Monday in Alexandria in an alleged skimming operation on a $17 million Pentagon-financed military contract with the Philippines armed forces, according to law enforcement and other sources.

The government will seek fines of $1 million, the sources said.

One of the men, Raymond Moreno, 40, from the Philippines, also will plead guilty before U.S. District Judge Claude M. Hilton to one count of filing a false statement with the Pentagon and one count of filing a false tax return, the sources said.

The guilty pleas of Moreno and one his employes, John Ward, 66, an American, would be the first to stem from a three-year grand jury investigation into contracts obtained under the Pentagon's foreign military sales program by Moreno's California-based firm, Amworld.

Both men live in Manila.

The plea bargain, which has been approved by Hilton, is regarded as a good deal by the Justice Department because of difficulties faced in obtaining documents and witnesses from the Philippines, according to one law enforcement official.

"We're getting $1 million from someone who is a Philippine national who may have more {information} to give up," said the official.

According to government sources, more than $5 million was skimmed from the microwave communications contract, but that figure is disputed by defense attorneys.

Moreno and Ward have cooperated with federal authorities in the continuing investigation, which is focusing on, among other things, alleged misconduct by some U.S. firms that were subcontractors on the communications project, sources said.

Sources said the subcontractors include Ocean Applied Research, Intercom, Mitel and Farinon, a subdivision of Harris Corp.

The plea agreements, worked out last month in Paris during negotiations between federal prosecutors and attorneys for the men, do not foreclose further cooperation by them in the probe, being conducted by Theodore S. Greenberg, deputy chief of the Justice Department's fraud section, according to sources.

The probe is also trying to determine whether any former top officials of the Philippines played a part in or profited from the skimming operation.

A year ago, federal authorities issued an arrest warrant for former Philippines armed forces chief of staff Gen. Fabian C. Ver, who failed to comply with a subpoena to appear before the Alexandria grand jury investigating the Amworld contracts. Ver is thought to be in hiding in a North African country, sources said.

Others with arrest warrants for failing to appear before the panel include Ver's companion, Edna Camcam, and Imee Marcos Manotoc, a daughter of deposed Philippines president Ferdinand Marcos. Her sister, Irene Arenata, as well as two sons of Ver, testified before the grand jury in late 1986 under a court order.

Marcos and his wife Imelda, who also received subpoenas to appear, have turned over documents that have been submitted to the grand jury, one source said. The probe has not turned up any evidence linking Marcos to the alleged fraud on the Amworld contracts, a source said.

Staff writer Ruth Marcus contributed to this report.