In France at the time two schools of thought collided : the first wanted to build very strong heavy tanks , the other a lot of cheap light tanks .
It was a very expensive tank to build : the per unit cost was about 1.5 million French francs .
In French at the time two schools of thought collided : the first wanted to build very strong heavy tanks , the other a lot of cheap light tanks .
It was a very expensive tank to build : the per unit cost was about 1.5 million French francs .