Machines with these gigantic wheels were actually ordered, but the wooden model that was knocked together as a preliminary at once convinced even its best friends that the design was fantastic, and that any machine of the kind would be little better than useless on account of its conspicuousness and vulnerability. However, the “big wheel” idea did not utterly die, for in the upturned snout of the Mark I. Tank we have, as it were, its “toe” preserved, the track turning sharply back at about axle level, instead of mounting uselessly skyward, as would have been the case had not the old wheel idea been supplanted by that of the sliding track. CHAPTER III THE TANK CORPS IN EMBRYO PART I I Not till Act III. do we get the opening of the main plot of our drama. For it was only at the end of March, 1916 that recruiting for the new arm began, and therefore that “The Fighting Side” first appeared. [5]“At the end of March certain officer cadets with engineering experience and drawn from the 18th, 19th, and 21st Royal Fusiliers, were asked to volunteer their services for what they were given to understand was an experimental armoured car unit. (The Armoured Car Section of the Motor Machine Gun Corps.) “Those who decided to throw in their lot with the new Service were interviewed by Colonel Swinton and Colonel Bradley, who, in the course of their examination, threw out no hints as to further details relative to the new unit. Results of these interviews were communicated on the Thursday before Easter Friday, when successful volunteers were informed that they were to be granted temporary commissions in the M.M.G.C., and were despatched the same morning to report to the M.M.G.C. Headquarters at Bisley. Upon arrival further information was received from the Adjutant that short leave would be granted for the purpose of obtaining kit, and that all officers would report their return with kit, on the following Tuesday evening. “During the week that followed Easter the two first selected Companies, _i.e._, ‘K’ and ‘L,’ were formed, officers being posted to one or other of the Companies.” Specially selected officers and men of the original M.M.G.C. formed the nucleus of these Companies, and the Companies were formed into a Battalion as further reinforcements arrived. On the Monday after Easter Bank Holiday training began, instructions being given in the use of the Vickers and Hotchkiss .303 Machine Guns and later in the Hotchkiss 6-pounder Naval gun. An officer who arrived in about the second batch tells how he and another man from the same regiment were sent down to Bisley after the usual brief but formidable interview with Colonel Swinton. They arrived at Brookwood Station only to be told that the ever mysterious Motor Machine Gun Corps had left two days before for Siberia. Tableau!