Apart from the 100th anniversary of the commencement of the Great War on the 4th August, there are a number of other notable anniversaries occurring in 2014.
70th Anniversary of D. Day. (6th June)
200th Anniversary of the burning down of the White House by the British during the war with America.
300th anniversary of the death of Queen Anne of Great Britain and Ireland, the last Stuart monarch. (1st August)
50th anniversary of the last executions to take place in Britain. Two murderers were hanged: Gwynne Evans at Strangeways Prison, and Peter Allen at Walton Prison, (13th August 1964).
200th Anniversary abdication of Emperor Napoléon. He retained the title of Emperor and was given sovereignty over the island of Elba. He received 2,000,000 francs per year and 600 soldiers. (16th April 1814).
50th Anniversary of Nelson Mandela and seven other opponents of apartheid sentenced to life imprisonment in Pretoria. (12th June)
500th Anniversary of Trinity House.
And of course there are many more