The Battle of the Wilderness, fought May 5–7, 1864, was the first battle of Lt. Gen. Ulysses S. ... Both armies suffered heavy casualties, around 5,000 men killed in total, a harbinger of a bloody war of attrition by Grant against Lee's army and, eventually, the Confederate capital, Richmond, Virginia.
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Hope this helps ;)
B. But only so an hour
the word only indicates that "an hour" is considered a short time period for the flower, and so it represents "the youth" of it being a flower before it becomes like the rest