chosen men, were riflemen who had been promoted for performing feats of bravery and the like, and the silver cord of courage, was the mark of recognition of a "chosen man". Whilst not a recognised rank as such, it marked out chosen men as above average riflemen, and as such, was a great honour to hold.
The silver cord of courage was not so much a cord, than a silver band worn around the right upper arm, roughly about the same position rank markings would be.
Historically, chosen men would not necessarily be those who were bravest, but more often than not, those who were the best shots or those who had claimed the most kills or who had distinguished themselves in another way.
It could only be awarded by a brigade commander (or higher) after a recommendation of an officer who witnessed the act for which it was being awarded, and had to be warranted by the rifleman's commanding officer. Hence the chosen men tended to be professional soldiers as opposed to conscripts who had been "invited" to join by a magistrate, who were more often than not held in contempt by the "gentlemen" officers who made up the command structure of the regiments, most of whom had bought their commission and had little or no military training.
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