So, of these tanks used in the Louisiana Maneuvers, only the M-3 Stuart saw combat later in the war, correct? That picture that you posted of the M-2 indicated that it was in England as part of a lend-lease shipment. I don't recall any of those being used, but as usual, I could very well be wrong. As not being a tank expert by any means, the M-2 looks as if it could hold it's own against Japanese or Italian armor, but that's about it. Again, that's just my opinion, and it's not based on any concrete knowledge. Anything with a combat narrative with the M-2 that I can get my hands on out there?

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On the Plains of Hesitation
lies the blackend bones of countless millions
who, at the dawn of victory sat down to rest,
and resting died....
(author unknown-I wish it was me)