Re: Contact information for Order of the Second World War (Hereditary Society)
I couldn't find anything, either, with a google search for "Order of the Second World War". However, one for "Second World War, Order of" produced the following.
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Second World War, Order of the, James D. Partin, Registrar, P.O. box 7062 GH, Gainesville, FL 32605-7062, email: firstname.lastname@example.org.
I have no idea if this is valid, but you can give it a try. Good luck.