Trials were planned to start at the beginning of May after the first prototype began construction in April.

After a reversal of that decision, development was repeatedly delayed due to multiple problems.

The vehicle was the largest tank built up to that point, measuring 8.27 m (27.1 ft) long.

The hull was extremely elongated in order to cross the trenches of the Western Front.

The main armament was a shortened version of the Canon de 105 Court Schneider with a large ammunition capacity of 122 rounds.