The Commonwealth War Graves Commission maintains the graves and memorials of service personnel both in the UK and overseas. Kranji War Cemetery is maintained by this organisation. A searchable database is the first call for researchers seeking more information about men and women in the armed forces who died during a conflict.
First World War Centenary is lead by the Imperial War Museum in the UK. Partnership is open to groups and organisations, inculding schools. Free downloads for displays, such as photographs and timelines, are useful resources.
UK National Archives The First World War Sources for History site can point you in the direction for learning more about the Great War.
Still with the UK National Archives but a different site that focuses on the archives' collections. The unit war diaries are on this site along with links to many other historical documents held at the archives.
Roll of Honour has lots of information about memorials and cenotaphs in the UK and around the world. Some basic background on the Singapore cenotaph men, although a few are incorrect.
Scottish National War Memorial was instituted by Royal Charter to commemorate Scots from the Great War and all wars since. It is located within Edinburgh Castle.The website provides a search facility as well as a virtual tour.
Cymru 1914 -- The Welsh Experience of the First World War. This digital archive brings together source materials that were previously fragmented and frequently inaccessible. A unique resource of interest to researchers, students and the public in Wales and beyond.
Belfast World War One goes beyond Belfast's war to all areas of Northern Ireland to Blacker's Boys and Somme Heritage Centre in County Down, the Inniskillings Museum in County Fermanagh and links to various projects from Ulster War Graves to the 6th Connaught Rangers Research Group.
A guide to British Campaign Medals of the Great War. Explanations of medal entitlement and photographs of the medals.
BBC World War One Centenary includes links to documentaries, dramatisations, podcasts, stories and more.
Inside the First World War pdf downloads from the Telegraph newspaper in the UK. "Sponsored by Lord Ashcroft, Inside the First World War brings you insights and knowledge from IWM (Imperial War Museums) and opinions from leading military historians. Our objective? To explain the conﬂict of 1914-1918 and remember those who gave their lives."
Operartion War Diary. The story of the British Army on the Western Front during the First World War is waiting to be discovered in 1.5 million pages of unit war diaries. We need your help to reveal the stories of those who fought in the global conflict that shaped the world we live in today.
The Australian War Memorial's site is a mine of resources. Searchable database of men, photographs, documents.
National Archives of Australia holds the records of Australian servicemen and women who served in World War I in the first Australian Imperial Force (AIF).
Discovering ANZACs. Explore a growing selection of government records about Australians and New Zealanders in World War I and the Boer War. Enhance a profile dedicated to the wartime journey of someone who served. Uncover the personal stories of service men and women through original archival records.
Trove Australian newspapers and journals provides a comprehensive digital archive.
New Zealand Archives hold the records of the Ypres-Passchendaele Sector Casualty Forms of the First New Zealand Expeditionary Force 1914–1918. A selection of 700 records can be accessed online.
New Zealand First World War commemoration site suggests projects as well as providing a discovery section about New Zealand and the war.
French Ministry of Defence website has a section remembering their fighting men with the option of four language versions.
French National Archives in French only.
Photographs of life in the French trenches, letters, book extracts and more. Language is French but photographs are self-explanatory.
Aisne 1914-1918 Great War Battlefields.
On the Front Line is a project by journalism students in France. A very good interactive map from the English Channel to the Swiss border.
Mission Centenaire 14-18 available in French, English and German. Focuses on Remembrance Tourism but lots of interesting resources, articles and links.
National Archives of Ireland has digitised Irish soldiers' wills. Searchable database.
The Somme Association examines Ireland's role in the Great War with special reference to local cross-community involvement in the three volunteer Divisions raised in Ireland: the 10th and 16th (Irish) Divisions, and the 36th (Ulster) Division.
The Royal Dublin Fusiliers website promotes the memory of the Irish soldiers who served with the Royal Dublin Fusiliers in the 16th Irish Division (see Somme Association) in the Great War, and features military medals won by them and the campaigns in which they fought.
The Royal Dublin Fusiliers in Gallipoli on a site that includes background on the battatlions and those that were on furlough during the 1916 Easter Uprising.
The Irish Regiments at Gallipoli is a Raidió Teilifís Éireann website.
Fr Willie Doyle was a heroic Irish Jesuit military chaplain in WW1 who died while trying to save his men.
Francis Ledwidge Museum is dedicated Irish poet Francis Ledwidge, known as the Poet of the Blackbird, who served as a soldier in the Great War and was killed at the Third Battle of Ypres.
Canada's War Museum has an accessible site with good resources for schools and teachers.
The Veterans' Affairs site has a Canadian Virtual War Memorial with a search engine for names of Canadian soldiers.
Commemoration of the First World War in Belgium site is available in French and English. It lists events taking place over the next four years and provides links to other Belgian sites commemorating the war.
West Flanders site is geared towards visitors intending to tour the war cemeteries. Full of useful information.
The Wallonia-Brussels Federation has a commemoration site in French only. They are calling for project proposals to cover as wide a range of research as possible.
The American Battle Monuments Commission, guardian of America’s overseas commemorative cemeteries and memorials, honours the service, achievements and sacrifice of U.S. Armed Forces.
Timeline of the First World War on the American Battle Monuments Commission site. Map or chart versions with photographs, film, maps and short explanations. Very good resource for simple explanations and visual interest.
WW1 Commonwealth Contribution commemorates the role of the Commonwealth in WW1 by delivering educational lectures to schools and communities throughout the UK.
Red Cross Records for Prisoners of the First World War. Archives 1914-1918: during the First World War 10 million people, servicemen or civilians, were captured and sent to detention camps. The belligerent countries involved provided lists of prisoners to the International Committee of the Red Cross, which created an index card for each prisoner and detainee. You can search through all 5 million of them.
International Society for First World War Studies.
Centenary News has a tagline that states "Independent, impartial and international coverage of the First World War Centenary and Centennial 2014-2018." As expected, it has a broad spectrum of information, news and events listed.
Europeana 1914-1918 – untold stories & official histories of WW1. The site allows you to explore stories, films and historical material about the First World War and contribute your own family history. Broad range of resources from libraries and archives across the globe with memories and memorabilia from families throughout Europe. "Discover. Learn. Research. Use. Share." Available in multiple languages.
Ancestry is one of the best resources for information on individuals who were in the British Forces during the First World War, with medal card records and Short Service records available. Family information from census of 1901 and 1911 are particularly useful in finding out more about the backgrounds of men and women of the First World War. A genealogical gold mine.