The commander of that brigade, Bill Gamble, came up the hill on a muddy horse, trailed by a small cloud of aides, gazed westward with watery eyes.
To keep track of how many soldiers are involved, keep in mind that a corps can be divided into divisions (which is about 10,000 troops each), and that a brigade (2,000-3,000 troops) is bigger than a battalion (less than 1,000 troops).
He had smelled out the shape of Lee’s army in all the rumors and bar talk and newspapers and hysteria he had drifted through all over eastern Pennsylvania, and on that day he was perhaps the only man alive who knew the positions of both armies.
an army unit consisting of a headquarters and companies
But they come in whole battalions.
Another definition ("a large indefinite number") and the example sentence make "whole battalions" seem much bigger and more threatening. Compare with "corps" and "brigade" in this list.
It was a short way through the night to Lee’s headquarters, and they rode past low sputtering campfires with the spy puffing exuberant blue smoke like a happy furnace.
And people lookin’ down their noses and grinnin’ behind me back and all the time tellin’ me exactly what I want to know about who is where and how many and how long ago, and them not even knowin’ they’re doin’ it, too busy feelin’ contemptuous.
Compare with "imperious" in this list. Although "contemptuous" has a connection to hate while "imperious" is connected to empires and command, the two adjectives are used synonymously in their example sentences to mean "look down upon."
It was bad to see the indomitable old man weak and hatless in the early morning, something soft in his eyes, pain in his face, the right hand rubbing the pain in the arm.
They had been together for a long time in war and they had grown very close, but Lee was ever formal and Longstreet was inarticulate, so they stood for a long moment side by side without speaking, not looking at each other, listening to the raindrops fall in the leaves.
a knife fixed to the end of a rifle and used as a weapon
There were guards with fixed bayonets.
"Fixed" means "being set firmly in position"--a bayonet that is fixed is attached to the end of a rifle and is ready to transfix ("to pierce with a pointed weapon").
caused by law or conscience to follow a certain course
“Listen, Buster. You’re a private now and I’m not supposed to keep you at headquarters in that rank. If you want to go on back to the ranks, you just say so, because I feel obligated—well, you don’t have to be here, but listen, I need you.”
In the background the tents were coming down, the wagons were hitching, but some of the men of the Regiment had come out to watch and listen.
Compare with "brigade" in this list--although the given definitions are identical, a brigade is actually made up of two or more regiments, while a regiment is made up of two or more battalions. In numbers, a brigade is bigger, but in their Latin roots, a regiment seems to have more power ("regere" means "to rule" while "brigare" means "to fight").
Try that against an Indian, that glorious charge, saber a-shining, and he’d drop behind a rock or a stump and shoot your glorious head off as you went by.
"Glorious" also means "having or deserving or conferring high honor"--the use of the adjective twice suggests this definition in a mocking way. Charging with a shiny saber might look glorious, but it also creates an easy target for an Indian with a gun and does not lead to glory as a headless horseman.
The only ones who even irritated him were the cavaliers, the high-bred, feathery, courtly ones who spoke like Englishmen and treated a man like dirt.
The given definition is suggested by the example sentence's use of the adjective "courtly" ("refined or imposing in manner or appearance"), but the intended definition is connected to the Latin "caballus" which means "horse" and to the word "cavalry" which means "troops trained to fight on horseback."
a school for training ministers or priests or rabbis
A preacher from the Seminary began a low, insistent, theological argument with a young lieutenant, back and forth, back and forth, the staff listening with admiration at the lovely words.
Someone suggested they drink to that, but Pickett reminded one and all soulfully of his oath to Sallie, schoolgirl Sallie, who was half his age, and that brought up a round of ribald kidding that should have insulted Pickett but didn’t.
He sat off to one side, withdrawing, had one long hot swig from Armistead’s flask, disciplined himself not to take another, withdrew against the trunk of a cool tree, letting the night come over him, listening to them talk, reminiscing.