This post is in answer to a comment I received from my last post from Hong Kong. I must admit I was pleased to see my blog entries being read from so far away! Anyway unfortunately I don't think I can really answer Kwong's questions in much detail but the following is as much as I know on inter-war design for pillboxes. The 1936 RE Manual gives three drawings for concrete machine gun emplacements, the first being the familiar 1936 Design referred to in Kwong's comment, variations of which were used in pillbox construction in the UK during 1940 (esp in Norfolk, Taunton Stop Line, GHQ Line in Surrey / Kent) and as Kwong suggests in Hong Kong as well. Above: The familiar 1936 design for a machine gun emplacement. The other two examples of concrete machine gun posts include one of which is built into the shell of a house. The other is described as an emplacement with medium cover where concealment is necessary. I don't think this was a practical desi...