A D.C. police captain has retired, six officers have accepted reprimands and four other officers face police trial board hearings because of a policeman's bachelor party last June at which two prostitutes were hired to perform sexual acts.

Among the four who face a May 6 trial board date is Sgt. Gilberto T. Campos, 33, an 11-year police veteran for whom the party was given shortly before his marriage.

Campos, who was knocked off a promotion list of prospective lieutenants after internal police investigators learned about the party last October, faces a charge that he engaged in "sexual improprieties with unidentified females in the presence of others."

Campos is disputing the charge, arguing that he was forced to engage in sexual activities by two other off-duty policemen who held his arms, according to Inspector Horatius W. Wilson, who headed the internal police investigation.

More than 50 policemen who either attended the party or heard about it later were interviewed by the police investigators. All but the 11 were cleared, Wilson said.

All of the policemen attending the stag party were stationed in the police department's 3rd District, which regularly patrols the prostitution and pornography strip along 14th Street NW. The party was held nearby, in the penthouse of the Holiday Inn at 1615 Rhode Island Ave. NW.

The two prostitutes, who have never been found, were paid an undisclosed amount for their night's activities out of a collection taken for the party among the police officers.

As the evening progressed, numerous policemen, all off-duty arrived at the penthouse for food and liquor, which also had been bought with the donations. As the party continued into the early morning hours, the prostitutes performed sexual acts with various participants as others watched.

Several guests, however, found the presence of the prostitutes offensive and left.

The highest ranking officer affected by the investigation was Capt. Nicholas Sagan, 44, a 20-year veteran who commanded Section A, a wing of the 3rd District comprised of many of those who attended the party.

He retired on his own, after the party became known, but Wilson said that if Sagan were still on the force, he probably would have faced a charge that he failed to stop the illegal activity.

Sagan could not be reached for comment.

Lts. Charles A. Mussomele and Raymond L. Sandifer, both 42 and 18-year veterans, accepted official reprimands for "dereliction of duty" on charges that they had "failed to take action to prevent subordinates from engaging in sexual misconduct with unidentified females," which was "prejudicial to the reputation and good order of the department."

Sgts. Kenneth E. Ford, 33, a 10-year veteran, Calude S. Malcolm, 36, with 14 years on the force, and Roy G. Jones, 39, with 12 years' experience, also accepted reprimands for failing to take any action to stop the sexual activities.

Officer Kenneth B. Jarvis, 39, with 12 years on the force, accepted a reprimand for being a participant in the sexual activities. Deputy Police Chief Wiliam Dixon said that at one point during the party Jarvis was seen swinging from a crossbeam in the penthouse.

All of those who were reprimanded were barred from taking a recent promotion examination, a test that is given only once every two years. The letter of reprimand was also entered in their permanent personnel files.

Besides Campos, others facing trial board hearings are Sgt. Thomas G. Diethrich, 42, with 21 years on the D.C. force; Sgt. Alan D. McDowell, 37, and eight-year veteran, and Officer Mario Guarin, 34, a D.C. policeman for four years.

Diethrich and McDowell face charges that they failed to taken any action to stop the sexual misconduct, while Guarin is charged with engaging in "sexual improprieties."

If convicted, all four appearing before the trial board face possible reprimands, fines or dismissals from the force.All four could have accepted reprimands like the other six officers, but they chose to go before the board instead.

Wilson said that no criminal charges were brought in the incident because the prostitutes could not be found, making a criminal case too weak to prosecute.