Mladic defence witness says Bosnian Muslim fighters deliberately hid among civilians during siege.
Prosecution contends that ex-army chief was in command of soldiers who carried out the killings.
Wartime officer tells judges that officers feared paramilitaries would attack villagers if they remained.
Former colonel in Bosnian Serb military claims all non-combatants were given a chance to leave.
Former military policeman tells tribunal that he was never given any official information about the fate of Bosniaks held at his barracks.
Ex-commander tells tribunal that civilian deaths were not intended.
Witness denies knowledge of plans for and implementation of mass killings.
Thousands of bodies were removed and reburied elsewhere following massacres in the enclave.
Former officer in Serb military alleges that those who refused to surrender were killed by their own side.
Testimony contradicts evidence given by another witness in the trial.