WWI British Gun Carrier Mark I, the first modern self-propelled gun.
https://diqn32j8nouaz.cloudfront.net...n_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...133#post230402
https://www.homemadetools.net/forum/...938#post229845
https://www.homemadetools.net/forum/...385#post215299
https://www.homemadetools.net/forum/...719#post223422
https://www.homemadetools.net/forum/...517#post182056
