Sight, Trunnion. A front-sight fixed on or near the trunnions of a gun.
Sign. An indication or token. In astronomy, one of the twelve divisions of the zodiac.
Sign. To affix a signature; to subscribe.
Sign Language. A pantomimic system of communicating ideas, extensively used by North American Indians. The range of its use is not exactly known, but it is common among all the tribes of the plains and many of those beyond the Rocky Mountains. It is in one sense the court language of the Indians, being the only means of communication between tribes not speaking a common dialect. According to Gen. Marcy, it is accurately used and perfectly understood by all the Indians from the Gila to the Columbia. The same author tells a remarkable story, which seems to show that the system is very nearly, if not exactly, the same as that used in teaching mutes in deaf and dumb asylums.
Signal. Any sign made for marching, fighting, etc. Signals are likewise given by the drum, bugle, and trumpet, during the exercise of a battalion. See [Signal Service].
Signal Code. See [Signaling].
Signal Equipments. See [Equipments, Signal].
Signal Service. In the U. S. army there is one chief signal-officer of the army, with the rank, pay, and emoluments of a brigadier-general, and 400 enlisted men. The chief signal-officer is assisted in his duties by commissioned officers detailed from the line for that purpose. In war times the Signal Service of the U. S. army is equipped to maintain communications by telegraph, signals, etc., between different sections of an army or armies, or between land and sea forces. The enlisted men are thoroughly drilled in the art of field telegraphy. In peace times the Signal Service has a corps of observers stationed in large towns, and important commercial centres, to give timely warning of the approach of storms, rise of rivers, and all other important weather news for the guidance of merchants and others.
Signaling. Is of remote origin. A rude code of signals addressed to the eye is common among the savage races of the present day, and doubtless existed from the earliest times among the historical races. The Indians of the great plains of North America avail themselves for night-signals of fires lighted on elevated points, and of dense clouds of smoke made by suddenly heaping green brush upon a fire for day-signals. Gen. Marcy, in his “Army Life on the Border,” shows that similar signals can be used in this region with great advantage by troops engaged in Indian campaigning. Messages exchanged in this way must be preconcerted. This method of signaling dates from a remote antiquity. Alphabetical signaling—a system in which a written language is conveyed by means of its elements—is first described by Polybius, about 260 B.C., and seems to have been devised, or at least greatly improved by him. He formed a code by arranging the letters of the Greek alphabet in several columns. A given letter was represented by a number of lanterns or torches or other signals, which gave the number of the column, and a second set of signals giving the number of the letter in the column. Capt. John Smith, of Virginia fame, is said to have used the system of Polybius during the siege of Vienna. Alphabetical signaling thus early adopted remained without improvement, and too cumbersome for general application till recent times. Message signaling by torches, flags, and rockets has been generally used, especially at sea, where it has a wide application both in war and commerce. The signals usually represented numbers, which were referred to printed codes. The invention of the magnetic telegraph led to the Morse alphabet, which crystallized the hitherto vague idea of representing letters by the combination and arrangement of a few simple elements. In the general service code of the United States, there are used two elements. These can readily be represented by sounds, motions, numbers, colors, etc. The ordinary method of signaling is by waving a flag by day and a torch at night. See also [Telegraph, Field].
Sikh Wars. Two brief but desperate contests waged between the British power in India and the Sikhs in 1845-46, 1848-49, which resulted in the destruction of the latter as an independent nation. The first had its origin in the dissensions which convulsed the Sikh country after the death of Runjeet Singh, and which necessitated the exercise of wary regard on the part of the Calcutta authorities. At length an army of Sikhs, flushed with their triumph over all lawful authority in their own country, crossed the Sutlej, and extended their ravages over British territory; but their advanced guard was met by Sir Henry Hardinge, the governor-general, at the head of four regiments of infantry and one of dragoons, and routed at Mudki with heavy loss. Three days after, the main body, which had in the mean time crossed the river and intrenched itself at Feroze-Shah, was attacked by a larger force of British under Gough and Hardinge, and after a bloody conflict, which lasted two days, also routed. Still undismayed by these reverses, they again intrenched themselves at Sobraon; but a fresh body which had just crossed the Sutlej at Aliwal 19,000 strong with 68 pieces of cannon, was wholly routed and driven across the river by Sir Harry Smith, at the head of 7000 men, with 32 guns; and their main body was soon after similarly dispersed at [Sobraon] (which see). The British then crossed the river, took Lahore, and restored the authority of the young Maharajah from whom they took the territory between the Beas and the Sutlej; the treaty confirming this settlement being made at Lahore, March 9, 1846. But the internal disturbances in the kingdom of Lahore soon became as active as before, and induced the Maharajah’s prime minister to put the country under the Company’s protection; and a residency with a guard of regular troops was then established in the capital. On April 20, 1848, two British officers were murdered by a Sikh chief, the dewan of Moolraj of Multan; and as it was found to be but a premonitory symptom of a general outbreak, a small force of British under Lieut. Edwardes, aided by a body of Sikhs, under the rajah of Bhawalpur, gallantly attacked the army of Moolraj, which, after a desperate conflict of nine hours, they defeated on June 18, and, both sides in the mean time having received reinforcements, again on July 1; Multan was then laid siege to, but the defection of 5000 auxiliary Sikhs under Shere Singh (the son of the Sirdar Chuttur Singh, the governor of Hazara, who had been for some time in revolt, and had driven the British from his district), compelled the British to retreat. For some time, the British authorities in the Punjab were hampered by a want of military force, and though the Maharajah and much of his army still opposed the Sikh rebels, little reliance could be placed upon most of it. Shere Singh now succeeded in raising his army to 40,000, but was defeated by Lord Gough at Ramnuggur (November 22). The inconsiderate haste of Gough at Chillianwalla, January 13, nearly lost him that great battle, which was saved only by the extreme valor of his soldiers; but amends for this fault were made at Gujerat, where the power of Shere Singh and his allies was completely broken. Meanwhile, the fortress of Multan had, after a protracted bombardment, been captured, and the Company, seeing no other mode of protecting their territories from annoyance by these warlike fanatics, annexed the Punjab, March 29, 1849, and thus terminated the existence of the Sikhs as an independent nation.