"The Rocket Egress Assisted Carrier Trial:
A project of the Specialised Armour Development Establishment, who were working on using rockets to unditch bogged heavy armoured vehicles c.1946, and found the carrier a handy test-bed...
Perhaps surprisingly... the trials were said to be a success.
When only one sides rockets initiated... the obvious happened:"
And I never knew they could get LSD back in those days - what were they thinking???