Obelisk

{On the south facing front:}
1914 - 1918, in memory of the officers and other ranks of the Royal Naval Division who gave their lives for their country.

{Also on the front:}
Gallipoli 1915 - 16
Collingwood
Salonica 1916
France and Belgium 1916 - 18 

{On the low west wall, almost disappearing behind the Admiralty Citadel (vine-covered bunker):}

Blow out, you bugles, over the rich Dead!
There's none of these so lonely and poor of old,
But, dying, has made us rarer gifts than gold.
These laid the world away; poured out the red
Sweet wine of youth; gave up the years to be
Of work and joy, and that unhoped serene,
That men call age; and those who would have been,
Their sons, they gave, their immortality.
  Rupert Brooke, 1887 - 1915, Hood Battalion

{On the low front wall but over to the right:}
This memorial designed by Sir Edwin Lutyens was unveiled on the Horse Guards Parade at the corner of the Admiralty on April 25th 1925 the tenth anniversary of the landing on Gallipoli.
Removed in 1940. Erected at Greenwich in 1951 and reinstated on this site in 2003.