The A's and B's: A Versatile Design

Most of the photographs you see are either A's, A version or B version. They would have just been converted to a control vehicle with maps everywhere and boards so you can put the maps on. The newer versions, the C's and D's, war uses as front line vehicles. And they could actually just bolt on a liner on the inside of the outside hull. So it was a very versatile design indeed, I think.