Emhar 1-72 Mk.IV 'Female'

The British "heavy" tanks of WW1 can be considered the starting point of all modern tanks. British design started with "Little Willie" then moved quickly into "Mother". The really interesting part to me is that during their inception and initial deployment, the naval arm of the British was in charge of these "landships". Once the teething problems with "Mother" were figured out, the Mk.I hit the battlefields of France.

http://www.wwi-models.org/IM/British/mk_iv.html