The only records not available via the LDS are the microfiche of the indexes, which, for whatever reason cannot be circulated to other FHCs. But all the General Registers of Service 1816-1922 are available on LDS film. Jim Herlihy's book is the definitive index of names/service numbers. The muddle, according to Herlihy, was different indexing by various organisations, matching different sets of film numbers held by Dublin, Kew, Proni, LDS etc I have Herlihy's index, if anyone needs a service number looked up. You would then need to decide where you will look for the actual record (Dublin, Kew, LDS) and I can find the appropriate film number for that particular set of archives. There will almost always be more than one person with the same name. The service numbers were allocated in date order of joining, and were filmed in that order. So you need an approximate decade of birth, if you don't want to waste time looking up someone who joined in 1820, rather than 1920. Men could join after age 19, so unless you know otherwise, that is the rough timeframe to work from. Some one asked if there is other info available. I have not been to the Dublin Archives, but I did find some Pension details in records held at Kew, which have not been filmed. In the main, these were details of names, addresses and amounts paid to pensioners and their widows. So it is likely that Dublin holds similar data. But only the General Registers have been filmed and made available worldwide. You would need to write to the archives at Dublin Castle for anything else. Cathy