Welcome to my Buildarmy Flickr page. I created those models in LDD. To make them accurately scaled, I converted the scale measured from the blueprint to Lego brick unit . It works fairly well as they can overlap the real things in the historic photos. I applied Lego compatible pieces to make the sets affordable to kids so they can build an army from them. Of course one can find Lego pieces, if preferred, to build from my instruction. I also drew and created those minifigures. You can recruit them here: buildarmy.com/ Ebay store( Build Army ).