Australian jet fighters have led international air strikes against Islamic State targets for the first time, destroying key training facilities used by the extremists in Iraq.
Defence has also revealed that 200 special forces personnel could enter the country as military advisers within the next week.
RAAF aircraft have flown 144 missions since joining the fight against IS, which is also known as ISIL.
Super Hornets accounted for 89 of the sorties, with laser- and GPS-guided bombs dropped in October.
Chief of Joint Operations Vice Admiral David Johnston said IS targets were being hit hard, and 14 were either destroyed or damaged by the Australian strikes.
"The air campaign continues to deny ISIL the ability to have freedom of movement and to be able to amass their forces and be able to conduct resupply of their fighters in the field," he told reporters in Canberra on Wednesday.
For the first time, the Super Hornets led a strike mission targeting IS training facilities in northern Iraq.
Vice Admiral Johnston said it was quite probable that IS fighters had been killed in the Australian strikes.
However, he said there was no evidence of civilian casualties or that the bombings had killed Australian IS recruits.
Australian officials are in the final stages of negotiating with Baghdad about arrangements for the deployment of special forces personnel.
Vice Admiral Johnston said the deployment could be within the next week.
OPERATION OKRA SO FAR
* Super Hornets have flown 89 sorties totalling 663 flying hours.
* 25 laser- or GPS-guided 500-pound (227kg) bombs dropped in October
* 14 targets hit by Australian aircraft, with 11 destroyed and three damaged
* KC30 have flown 33 refuelling missions, transferring 2.5 million pounds (1.13 million kilograms) of fuel
* 24 Wedgetail reconnaissance missions
