This postcard shows some of the crew of HMS Iron Duke during WWI. I bought it a couple of years ago, as the Iron Duke was a very significant warship in the British Navy. The card was addressed to the mother of one of the crew, but I couldn't find her. A few hours research online gave me: His full name His date of birth His full naval record His family details His date of death (he survived the war) A photograph confirming his identity and more. This is what can be achieved. If you don't know where to start, or if you're stuck, this community can achieve this for each other by working together and pooling resources