The most interesting feature of these otherwise exceedingly bad machines was the fact that they ran on a spring track. The use of springs for so heavy a Tank was the one progressive departure in the German design. Their crew consisted of an officer and no less than fifteen other ranks. This huge crew, twice that of a heavy British Tank, actually went into action in a Tank 24 feet long by 10 feet wide. However, the close association of the crew was merely physical, for they were composed of no less than three distinct arms, and appear to have done little or no training together as a crew. There were the drivers who were mechanics, there were the gunners who were artillerymen, and the machine-gunners who were infantrymen. Members of the British Tank Corps were at one time much puzzled by German Tank prisoners’ statements, that on such or such an occasion the infantry had spoiled their shooting, or that the artillery had not backed them up, in circumstances when there was no particular question of co-operation with other arms. They came afterwards to understand that the anathema’d representatives of rival arms were inside the machine, not out. But in reality rival machines constituted but a small part of the German anti-Tank measures, for, as we have said, after the victories of July and early August, these begin to be panic-stricken in their elaboration, and after the Battle of Amiens, we find Ludendorff himself pouring out his soul on the subject. He obviously realised that anti-Tank defences had been neglected, and he probably saw also that this neglect was going to be difficult to explain to an Army and a public which, as the result of failures, were about to become extremely critical of their leaders. After the Battle of Amiens, therefore, the Germans began feverishly to set their house in order, and we find special Staff Officers appointed at the Army, Corps, Divisional and Brigade Headquarters, whose sole duty it was to organise the anti-Tank defences within their formation.