"It is unusual," replied his uncle, "for either an admiral or a general to fight in person; it being their duty to put their armies in order of battle, and afterwards, during the fight, to control the movements of the different regiments or divisions by orders carried by aides to the officers under their command."

"You told us, uncle," said Willie, "that Washington received, along with the commission of adjutant-general, the rank of major. Now, what are we to understand by this?"

"A commission," replied his uncle, "is a writing, giving some one the right or authority to perform the duties of some office, and receive the pay and honors arising from the same. The duties of an adjutant-general you have already seen; and the commission received by young Washington to perform those duties made him equal in rank, not to a general, but to a major."

"I know you told us, uncle," said Ella, "what is meant by surveying; but I don't think that I clearly understand it yet."

"I will refer you to your brother Dannie," said Uncle Juvinell; "for he is looking very wise, as if somebody knew a thing or two, and could, were he but called upon, greatly enlighten somebody else. Out with it, Dannie, and let us have it."

"Surveying teaches the measurement of land," Dannie made haste to answer; "and a surveyor is one who measures land with the help of a long chain and compass and other instruments. Now, George Washington, for example"—

"That will do, Daniel," said his uncle, interrupting him: "you have made it as clear as daylight already; and I dare say your sister understands you perfectly, without the help of any example."

"Oh, I like to have forgotten one thing!" cried Willie. "Tell us what is meant by line of march, manœuvres on the battle-field, throwing up intrenchments, and the like."

To these points, Uncle Juvinell made answer: "An army, my nephew, is said to be on the line of march when it is moving from one place to another. A manœuvre is an evolution or a movement of an army, designed to mislead or deceive an enemy, or in some way to gain the advantage of him. An intrenchment is a breastwork or wall, with a trench or ditch running along the outside. The breastwork, being formed of the earth thrown up from the trench, serves as a protection against the shots of an enemy. The trench being quite as deep as the breastwork is high, renders it very difficult and dangerous for the works to be taken by storm; for the enemy must first descend into the ditch before he can reach and scale the wall,—an attempt always attended with the greatest peril to those who make it; for they who defend the works, fighting on top of the walls, have greatly the advantage of those beneath. Sometimes intrenchments run in straight or crooked lines, and sometimes enclose an irregular square or circle; and any piece of ground, or body of men, thus enclosed or fortified, is said to be intrenched."