As people have been asking, in addition to the Emir, who as explained above built the terrain and provided the Imperial Forces, the armoured train was built by Ingram (see previous postings of his on techniques and with more pictures). Historically the train did not play a major part in the battle and so did not get the chance to show its paces in this re-enactment.
...and I'm afraid I was the one who had to leave early and go to the football match...
MP