Now consider the man's eyes and ears. With these he obtains information as to what is going on around him. Without them he is at the mercy of those who are better provided than he. The eyes and ears of the army are the Flying Corps, the motor cyclists, and the cavalry. They discover the enemy's movements, and keep the staff well informed of his doings.
When a man is boxing, he usually leads off with a blow at the head from his left arm. We may call his left arm the artillery, for with its artillery an army strikes hard and far.
A comparison between a man and an army.
A man's feet enable his body to advance. We may call the Engineers, the Army Service Corps, and the Royal Medical Corps the feet of the army.
There now only remains the man's body, in which lies all his power. The body of an army is the mass of Infantry which comprises its chief force.
CHAPTER XX.
SOME MILITARY TERMS.
Before we proceed, we must clearly understand some terms which are used in war. In reading newspapers we frequently meet with the term army corps. A modern army is made up of a certain number of army corps, each of which is a complete army in itself. At the beginning of a campaign we may reckon an army corps to consist roughly of 40,000 men of all arms, under the command of a general.