List of wounded/POW officers
Hi Janette
It would help if you could the name of the man you are researching - you never know, but he might be mentioned somewhere(!). Also, just put his name into a search engine and see if anything comes up. Plus, of course, try Google Books for accounts of the battle.
By searching for (wounded AND Talavera), I've just found this list of British officers held as POWs at Verdun 1804-1813: https://www.napoleon-series.org/milit...satVerdun.html. Just keep scrolling until you come to those captured at Talavera. You will see that many of those taken prisoner were medics who had stayed behind to tend the wounded on the field of battle.
Hope this might give you a few ideas.
Off to roost.
Owl