
British Royal Navy & Royal Marines, Battle Of Jutland 1916 Servicemen: This collection totals more than 38,000 records of Royal Navy/Marine servicemen who took part in the Battle of Jutland (31 May to 1 June 1916), the largest naval battle of WW1. Some 1600 men born in Ireland are included in the collection, nearly a third of them recorded with a birthplace in County Cork.
The collection – created from various records held by the National Archives in Kew, London, and Naval and Military Press, and held in FindMyPast's Britain and World packages – typically hold name, birthplace, date of birth, physical description, original occupation, details of the ships on which they served (and dates), and conduct reports. Some also have photographs; I don't know if it's just the Irish records, but in a random search of around 25 records, I haven't found any with photos.