In World of Tanks, there are a number of "grinder" tanks. These vehicles are characterized by large volumes of modules or points needed to advance to the next vehicle, or have a feature that makes playing them a chore rather than fun. Tanks like the maligned AMX 40 for example.
One tank that I see gets called a "grinder" tank more often than not is the Tier 3 American M2 Medium tank.
The M2 Medium is a historical oddity. It was one of the largest tanks
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