Thank you very much Francis for your comments.
Oh well, some license regarding the crew and the height of the gun!
Both easily fixable. You may want to modify the following figures by Tulius Hostilius of the Junior General site:
https://juniorgeneral.org/index.php/...ryKhakiUniform
Nevertheless, Spicer-Simson was seen wearing the notorious skirt.
https://en.wikipedia.org/wiki/Geoffr...cer-Simson.jpg