On 22 July I posted a help request on the list, as I was about to start researching my late father's service in 1918 during which he was wounded - battlefield unknown. Any listers about to start similar research should see the useful instructional video "*Webinar: Tracing British battalions or regiments during the first world war*" which was loaded today on the TNA web-site: http://media.nationalarchives.gov.uk/index.php/tag/webinars/ Also helpful is "*Tracing Your First World War Ancestors*" by Simon Fowler and this explains that you can obtain a soldier's active service Battalion from the medal rolls in TNA Class W329, the appropriate medal roll reference being on the medal index card. Unfortunately these medal rolls have to be consulted at Kew as they are not available on-line. Once the battalion is known the relevant war diaries can be consulted for details of the engagement. Guy Lawton