more usually just "Grant" and "Lee".

The chassis and running gear of the M3 design was adapted by the Canadians for their Ram tank. The hull of the M3 was also used for self-propelled artillery as with the original design of the M7 Priest, of which nearly 3,500 were built, and recovery vehicles.

Production

In addition to the Detroit arsenal, American Locomotive and Baldwin Locomotive were brought into the production

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