The bombardment that followed was, in fact, a revelation to our hero; for, though Wellington might easily have been better equipped for a siege, and have had a far superior battering train, the guns he possessed were nevertheless of service. Nor must it be forgotten that these same guns had been brought into position only after the very greatest labour and secrecy; for they had been sent round by sea from Lisbon, had then been transported up the River Setubal in small boats, to Alcacer do Sal, and thence by land across the Alemtejo to the River Guadiana. Think of the labour involved in such an operation, of the secrecy necessary to keep the movement from the knowledge of the French. Think also of the small army of helpers, all taking part in this war, and yet working out of sound of gun shot, and far from the presence of the enemy. That, perhaps is a question which escapes the notice of many. The tale of some campaign brings to light narratives of gallant deeds, of fierce attacks, of strenuous fighting; it leaves too often to the imagination of one ignorant of the life of a soldier, and of the needs of a campaign, all the numerous services upon which success of an army in the field depends. For if there be no one to supervise the stores, and to dispatch them to the seat of war, how can troops operate in a country devoid almost of food, where ammunition cannot be obtained, and where boots, clothing, and a thousand other necessary trifles wear out, are lost, or destroyed with alarming rapidity? Think, then, of the host labouring out of sight of the enemy, but labouring nevertheless. Think also of the other numerous band marching with troops as non-combatants, and yet subject to as great dangers, the very same privations, and bearing on their shoulders equal, if not greater, responsibilities; for with the troops there must be men to see to the distribution of food, to gather stores, and apply for all that is necessary. There must be trained officers to look to the ailments of horses, and, above all, perhaps, there must be an army of surgeons to care for the wounded and the thousands more who go down under privation and exposure. Riding round the bivouacs of the besieging army after their chat with the staff officer, Tom began to gather a better impression than he had ever had before of the numerous duties attached to soldiering.