Professor McCormack was the Foundation Australian Red Cross Professor of International Humanitarian Law (1996-2010) at the Melbourne Law School and also the Foundation Director of the Asia Pacific Centre for Military Law (2001-2010) – a collaborative initiative (established 2001) between the Melbourne Law School and The Australian Defence Force Legal Service. He has developed an international reputation for his expertise in International Humanitarian Law and International Criminal Law.
He used his Fulbright Scholarship to take up the prestigious position of Charles H Stockton Distinguished Scholar in Residence at the US Naval War College in Newport, Rhode Island (August 2015 – June 2016). He was also appointed Visiting Professor at Harvard Law School to teach in the Winter Term (January 2016). His research will focus on responsibility for violations of the law arising from emerging weapons technologies.