Why Btonze Age?

[abaris]

You might be thinking of the Renault UE Chenillette.  But although it looks like a tankette, it was not really meant as a fighting vehicle like a tankette.  It was intended instead to provide the French with a means to move supply up to forward trench positions while the trench position is undergoing WWI style shelling.  It's a small armored supply crawler.

Which is yet another pointer to the French staff still thinking in terms of 1918. There are quite many. Such as seemingly minor things like their way of refueling, which made them vulnerable to attack. Thouroghly exploited by the Germans.