The most used piece of kit in my kitchen is my saucepan. I use it every morning to cook my porridge in. The least used piece of equipment? I'd say a food mixer. I've never used it I don't really know what they're for.
My dad served in the Air Force as ground crew for several years and doesn't really talk about it. I know that it's there. I think my main thing about direct or indirect experiences as near to home as it were is the idea of self-sacrifice really.
