Wiktionary
n. (context military English) A compact body of troops forming a battle array, shield wall or phalanx
Usage examples of "sheltron".
It would be a long shot for the Scottish King was at the rear of the big central sheltron of his army, but it would not be an impos- sible shot for the black bow was huge and Thomas was young, strong and accurate.
Their sheltron, closest to the city, was the largest of the three Scottish divisions and it came at the English like a pack of wolves who had not fed in a month.
The sheltron on the Scottish left, rampant and savage, forced the English right so far back that a great gap appeared between the English centre, behind its stone wall, and the retreating division on its right.
The rearmost ranks of the sheltrons were composed of the tribes- men from the islands and the north, men who fought bare-legged, without metal armour, wielding vast swords that could club a man to death as easily as cut him down.
They were fearsome fighters, but their lack of armour made them horribly vulnerable to arrows and so they were placed at the rear and the leading ranks of the three sheltrons were filled by men-at-arms and pikemen.
The Scottish knights and men-at-arms, like the English, were on foot, but each of their sheltrons was much larger than its opposing English battle, three or four times larger, but Thomas, tall enough to look over the English line, could see there were not many archers in the enemy ranks.