His first academic appointments were at the Britannia Royal Naval College, Dartmouth, and the Department of Systems Science at the City University, London. In 1983, he was appointed visiting lecturer at King's College London and in 1989, he was appointed professor of history at the Royal Naval College, Greenwich, also teaching at the Open University. On a NATO Defence Fellowship, he was a visiting scholar at the United States Naval Postgraduate School, Monterey, California. In 1989, Till held the Foundation Chair in Military Affairs at the United States Marine Corps University, Quantico, Virginia.