After the war Heinz Guderian compared French tanks with those available to German commanders in 1940.

The French tanks were better than ours in armour, guns and number, but inferior in speed, radio-communication and leadership. The concentration of all armoured forces at the decisive spot, the rapid exploitation of success, and the initiative of the officers of all degrees were the main reasons of our victory in 1940.

http://www.spartacus.schoolnet.co.uk/GERguderian.htm

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