An SAS soldier may be forced to confess to an alleged murder Ben Roberts-Smith is accused of ordering, as the newspapers he is suing for defamation say proving the incident could win them the case.
The witness codenamed Person 66 began giving evidence in the Federal Court on Monday, but stopped short about a military operation in 2012 under the Victoria Cross recipient.
The war hero allegedly ordered the younger soldier to execute an unarmed Afghan prisoner in a cornfield, and Person 66 refused to answer any questions on Monday about the incident due to "self-incrimination".
