The New Zealand commander of the "Battle of Baghak", in which two Kiwi soldiers were killed, has been allowed to interview witnesses for a book he is writing.
Major Craig Wilson was given access to soldiers involved with the firefight in which Lance Corporals Rory Malone and Pralli Durrer were killed on August 4 last year.
Wilson was injured during the battle, which has been described as the regular army's biggest since Vietnam.
A Court of Inquiry has reported back but a Military Police investigation into the New Zealand troops' actions is still under way.
The Court of Inquiry found command on the day was "problematic".