Operation Janus' is the first in a trilogy of books involving Gurkha military units that may be read in any order and is followed by 'Operation Blind Spot' and 'Operation Four Rings'. The author, JP Cross, a retired Gurkha colonel, old 'jungle hand' and counter-insurgency expert, draws on real events he witnessed during his time fighting in the Malayan Emergency and on true characters, including a British officer of his own battalion who attempted to join the Communist terrorists.