When choices are eliminated, one does what one must. . .

A long column of soldiers and horses moved across the rolling landscape, an intense thunderstorm pummeling them. At the head of the column walked Captain Ulysses Benton, on foot and leading his mount through the tempest like the rest of the cavalry company, peering ahead into the murk to be sure of his way. Civilians, who only saw cavalry on the Fourth of July when it paraded in dress uniforms while the band played, thought of horse cavalry as a romantic way of life. Captain Benton knew better, as did all of the troopers walking in column behind him.

The real cavalry was this, trudging through the endless prairie, mud sucking at your boots, grass slippery underfoot, your feet aching from the march, sheets of water being thrown on you from a leaden sky while gusts of wind tried to knock you from your feet and forced water through every seam and opening so that no portion of you remained dry, tugging on the lead of a horse just as weary and worn out as you were, the horse occasionally snapping at you in its misery and irritation or jerking its head with devilish timing so the tug of the reins would threaten to topple you into the mud, your stomach almost empty since there’d been no way to make a meal, and your last seven warm meals had only been bacon and beans, but this day there wouldn’t even be that, nothing but soggy hardtack since no fire could be lit under these conditions.

And all for the princely sum of thirteen dollars a month for the privates. It had been sixteen dollars a month, but Congress had cut military pay in this year of 1870.

In the middle of column, the four supply wagons jolted and jumped over the uneven ground, riding light now that most of the provisions they had carried had been used up. Two more days, Benton thought. The company of cavalry would be back at Fort Harker in two more days. The only small mercy was that he and his men all wore the new broad-brimmed black slouch hats instead of the old forage caps, which wouldn’t have provided any real protection from the rain.

Lightning suddenly erupted around them like an artillery barrage targeted on the column, momentarily lighting the world so brightly that men flinched and closed their eyes against the flares. Benton’s foot came down hard, the way it would when walking down steps and misjudging the distance to the next step. He staggered, staying up only thanks to the fact that he had the reins wrapped around one hand, and getting another attempted nip from his ornery mount as the tired horse protested being used as a support.

Hearing some muttered curses, Benton blinked against the renewed darkness, locating Sergeant Tyndall. “Are you okay, sergeant?”...