I'm trying to track my dad's movements in France from when he was disembarked at Cherbourg on 9.9.1939 until he came out from St Nazaire as part of Operation Aerial on 17.6.40. I knew that he was part of the original BEF because he enlisted in June 39 and I have his army records, but they are very difficult to understand. His grandsons are now asking questions I wish i'd asked long ago. I have his army number and know that he was a Sapper. I also know, because he was reprimanded, that he was in La Baule on 25.4.40. He did tell me all about leaving France because he was there the day the Lancastria was sunk and it impacted on the rest of his life. I thought he told me that he got to St Nazaire from Nantes where they were all told just to get to the port as quickly as they could. If anyone has any information or could direct me to where I might find it. Or even tell me how I can narrow down the possible units he might have been in! For example, at one point the records say 12th MCG and at another we have RE270. A couple of times it says RESR (don't know what SR stands for). Grateful for any ideas. Many thanks.