Northrup Grumman, Lockheed Martin and Boeing also use the memorial to host corporate events.
The Australian War Memorial is defending the practice of hosting weapons companies at the war memorial as a photo and an invitation emerged from one function with a prominent drone maker.
One of the world's biggest weapons companies, Northrop Grumman used the Australian War Memorial to host a corporate launch and promote its drone program in December last year. The company also specialises in fighter jets and stealth bombers.
A photo taken at the event (above) shows War Memorial Director Brendan Nelson, U.S. Ambassador John Berry, then Defence Minister David Johnston and Chief Executive of Northrop Grumman Australia Ian Irving.
BuzzFeed News has also obtained a copy of the invite to the event which prominently features an unmanned drone and details that it was held in the ANZAC Hall of the memorial.
Mr Nelson was questioned about whether it was appropriate to host weapons makers during a Senate Estimates hearing last night. He confirmed several top companies including Lockheed Martin and Boeing also used it for corporate events.