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jingo: jingo: [17] The exclamation by jingo! has been around since at least the late 17th century, and the element jingo probably originated as a euphemistic alteration of Jesus. But it took on a new lease of life in 1878 when G W Hunt incorporated it into a music-hall song he was writing in support of Disraeli’s hawkish foreign policy towards the Russians. Its refrain went ‘We don’t want to fight, yet by Jingo! if we do, We’ve got the ships, we’ve got the men, and got the money too’. By jingo! was taken up as a nationalistic rallying call: those who supported Disraeli’s plan to send in the fleet were called jingoes, and their attitude was dubbed jingoism.

But these were terms used by their opponents, not by the jingoes themselves, and they were essentially derogatory, and when jingoism later broadened out in meaning, it denoted a mindless gung-ho patriotism.
rally (v.1): "bring together," c. 1600, from French rallier, from Old French ralier "reassemble, unite again," from re- "again" (see re-) + alier "unite" (see ally (v.)). Intransitive meaning "pull together hastily, recover order, revive, rouse" is from 1660s. Related: Rallied; rallying. Rally round the flag (1862) is a line from popular American Civil War song "Battle Cry of Freedom."
standard (n.1): mid-12c., "flag or other conspicuous object to serve as a rallying point for a military force," from shortened form of Old French estandart "military standard, banner." According to Barnhart and others, this is probably from Frankish *standhard, literally "stand fast or firm," a compound of unrecorded Frankish words cognate stand (v.) and hard. So called because the flag was fixed to a pole or spear and stuck in the ground to stand upright. The more common theory [OED, etc.] calls this folk-etymology and connects the Old French word to estendre "to stretch out," from Latin extendere (see extend). Some senses (such as "upright pole," mid-15c.) seem to be influenced by if not from stand (v.). Standard-bearer in the figurative sense is from 1560s.