What if the tank have been identified by the Germans as a weapon when it was first shipped to France?

not that likely

Explanation:

the British launch a major offensive against the Germans, employing tanks for the first time in history. At Flers Courcelette, some of the 40 or so primitive tanks advanced over a mile into enemy lines but were too slow to hold their positions during the German counterattack and subject to mechanical breakdown

a direct vote in which an entire electorate is invited to vote on a particular proposal. this may result in the adoption of a new law.