That chocolate in our ration packs......., sorry to go off at a tangent again........ was said to be salt-free. So that it was just the sugar and cocoa part for energy but less the salt so that it wouldn't make you thirsty afterwards. Made by Cadbury and Jamiesons in Dundee or Glasgow (anyone????) on contract as 'lifeboat or aircraft' survival rations. Rowntree made some special bars of YORKIE chocolate for our packs with NOT FOR CIVVIES printed across the wrapper!!!!!