But at Ribnica, three Pakistani armored personnel carriers escorted Mr. Finstad's convoy along the line separating Bosnian and Serbian fighters.

In an incident near Banja Luka, NATO fighters operating under Deny Flight shot down four Bosnian Serb fighters for violating a no-fly zone.

The defense has said there is no evidence that Sheik Moayad even knew the training camp inductee or the Bosnian fighters.

The jurors also heard yesterday from a former Croation law enforcement official, who showed the jurors the Bosnian fighters' address books.

But the official said 60 Bosnian fighters had been killed in the battle and more than 100 wounded out of a front-line force that numbers fewer than 5,000.

Though Government officials did not deny that some civilian Croats had died at the hands of Bosnian fighters, they insisted that it was Croatian forces who had sent the civilians fleeing.

The Bosnian fighters have been outgunned in most of the clashes, as they have been in the wider war with the Serbian forces, and they have taken heavy casualties.

Despite the odds, the Bosnian fighters seem convinced that they could not lose to the Serbian forces, even though all concede that a continuation of the battle would result in the destruction of Sarajevo.

A Bosnian Serb paramilitary fighter has been given a 20-year prison sentence for the persecution and murder of Muslim civilians during the 1992-95 Bosnian war.

The Bosnian fighters - waiters and truck drivers and engineers before the war - have little winter gear, and some even lack gloves.