Kam was a fourth-tier samurai.
Just like the Knights among the Humans, the samurai, a divine vocation, is typically exclusive to the children of nobles among the Troll Tribe.
However, Kam, the samurai, was a mercenary.
That was quite unusual.
After all, nobles' children would generally rather fight for glory than for money.
But Kam was an exception, he preferred money.
Back when he was still Baron Kam, he grossly increased the tax rate in his territory to an alarming 90% in order to extract more tax money...
One can imagine, nearly all of Baron Kam's subjects fled very quickly from his territory as they couldn't bear such exploitation.
Then, Kam was deemed incapable of ruling by the Troll Emperor, as a result, he was stripped off his nobility and territory.
Ever since then, Baron Kam became Battalion Commander Kam.