The statistics of those who died during the Civil War, not from injury but from disease are unbelievable. About 250,000 Union troops died of disease and about 194,000 Confederate. Despite this only about 2,500 Union troops caught typhus, about a thousand of whom died; figures for Confederate casualties while unknown are assumed to be similar.
Among the troops humorous names were given to what must have been something that was a most unpleasant aspects of their lives: Bragg's body guards; cooties; crums; grey backs; pants rabbits; seam squirrels; Tennessee travellers; blue bellies; rebels; tigers; Zouaves; vermin and big fat fellows.
There were other lice-related terms entered the military vocabulary i.e."skirmishing or fighting under the black flag" referred to the practice of lice picking. Discarding infested clothing was called "paroling the lice or giving the vermin a parole". Another was to turn the garment inside out this was "executing a flanking movement."