Etymology
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Armageddon (n.)

"cataclysmic final conflict," 1811, figurative use of the place-name in Revelation xvi.16, site of the great and final conflict, from Hebrew Har Megiddon "Mount of Megiddo," a city in central Palestine, site of important Israelite battles.

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Balaclava (n.)
"woolen head covering," especially worn by soldiers, evidently named for village near Sebastopol, Russia, site of a battle Oct. 25, 1854, in the Crimean War. But the term (originally Balaclava helmet) does not appear before 1881 and seems to have come into widespread use in the Boer War. The British troops suffered from the cold in the Crimean War, and the usage might be a remembrance of that conflict. The town name (Balaklava) often is said to be from Turkish, but is perhaps folk-etymologized from a Greek original Palakion.
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Alemanni 
name of a Germanic tribe or confederation from the Elbe River region that in late Roman times settled along the upper Rhine in Alsace and part of Switzerland, from Proto-Germanic *Alamanniz, probably meaning "all-man" (see all + man (n.)) and likely denoting a coalition or alliance of tribes rather than a single group.

But on another theory perhaps meaning rather "foreign men" (compare Allobroges, name of a Celtic tribe in what is now Savoy, in Latin literally "the aliens," in reference to their having driven out the original inhabitants), in which case the al- is cognate with the first element in Latin alius "the other" and English else.

The defeat of the Alemanni by a Frank-led army at Strasburg in 496 C.E. led to the conversion of Clovis and the rise of Frankish political power. The Alemanni were absorbed into the Frankish Kingdom in 796. Not historically important, but through proximity and frequent conflict with the Franks their name became the source of French Allemand, the usual word for "German, a German," and Allemagne "Germany." In modern use, Alemannish, Alemannic refers to the dialects of modern southwestern Germany; Alamannic refers to the ancient tribes and their language.
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