Complex sentence: In October 2011, McCann was honoured as an inductee into the International Hall of Fame of the Army Command and General Staff College, which honours previous international graduates who have reached the highest positions in their respective armed forces or similar positions in multinational military organizations.
Split into simpler sentences: In October 2011, McCann was honoured as an inductee into the International Hall of Fame of the Army Command and General Staff College. The Hall of Fame honours previous international graduates who have reached the highest positions in their respective armed forces or similar positions in multinational military organizations.