I'm having trouble tracing prototype information or pictures of a British Great War 4.2inch Howitzer (Code BP13). Everything seems to default to the 4.5 inch model represented by BP9/9A. Does the code represent a captured German 105mm? Any help appreciated.
I think I asked about this before. But I can't remember the answer... :-[
Google is your friend, when your memory isn't.
http://www.pendrakenforum.co.uk/index.php?topic=7643.30
Dave says that the 4.2 one is a mistake
Thanks Fred, that's saved me any more work. I wonder what it's meant to be...