The following image is a rare picture of the 'Sherman Octopus'.
This was a late WW2 British Sherman tank adaption bridging vehicle with fore and aft ramps designed to be driven into ditches or rivers to be spanned. This was a testbed vehicle and was not used in combat. Similar to the 'Sherman Ark' but with a greater span there were two prototype designs made, one with lattice ramps and one with box girder sections.
In the event the British Churchill tank was chosen for the role of bridging vehicle probably because it was a longer vehicle (Churchill Ark), but the Sherman Arks and Octopuses were used for training and trials.
In this image the first Sherman Octopus, with girder ramps, is being crossed by a Churchill VII.
"Helmet in the shape of an octopus kesi (Hoshi bachi Kabuto). Steel, gilded copper, silver, lacquer, leather, silk,
Edo period, first half of the 18th century. Florence, Museo Stibbert."
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