But if the gunners were but a casual and ill-administered force, much more so were the drivers. Over a thousand draught-horses were collected for the general use of the New Model, but how many, if any, of these were set apart for the artillery, it is impossible to say. Ordinary waggoners with their teams were impressed or hired to haul the guns, and it is recorded that the hackney-coachmen of London performed the duty more than once. The chief use of the escort of infantry was therefore to prevent the drivers from running away. It is doubtful whether the guns themselves travelled on four wheels or on two, contemporary drawings showing instances of both; but in either case there was no approach to what is now called the limber, the horses being harnessed simply to the trail.[169] The ammunition again was transported in ordinary waggons, the powder being indeed occasionally made up into cartridges, but more often carried simply in barrels which were unloaded behind the gun when it was posted for action. It was the function of the odd man of the gun's crew to cover up the powder-barrel between each discharge of the gun, to avert the danger of a general explosion. In fact, one principal link alone connects the artillery of the New Model with the artillery of to-day, the gun-carriages were painted of a fair lead-colour. Lastly we come to the Engineers, a corps which is more obscure to us even than the Artillery. Even in the days of the Plantagenets the English kings had taken Cornish miners with them for their sieges; and in the war of Dutch Independence Yorkshire colliers were specially employed for the digging of mines. But, although by the middle of the sixteenth century the Germans had already organised a corps of sappers,[170] no such thing existed in England. In truth, the British were not fond of the spade. The English indeed handled it often enough under Vere and his successors, while the Scots, though sorely against the grain, were forced to do the like by Gustavus Adolphus. But considering the schools wherein the British were trained, nothing is more remarkable in the Civil War than the neglect of field-fortification and the extreme inefficiency with which at any rate the earlier sieges were conducted. It is significant that the pioneers,[171] who are the only men that we hear of in connection with the unorganised corps of engineers, were the very scum of the army, and that degradation to be "an abject pioneer" was a regular punishment for hardened offenders. It is still more significant that the principal engineers of the New Model Army bear not English but foreign names.