It is usually equated to the organization called the "Mazorca", which was actually the security and military force working for it.
It was focused in locating people (mostly Unitarians, but also opposing Federals) involved in conspiracies against Rosas.
O'Brien (the Uruguayan Agent in England) for the benefit of the British Foreign Secretary Lord Aberdeen:[3] The Masorcas [sic], or secret affiliation, in support of Rosas's government, derives its name from the inward stalk of the maize, when deprived of its grain, and has been used by members of the clubs as an instrument of torture, of which your Lordship may form some idea when calling to mind the agonizing death of Edward II.
[4] O'Brien, who claimed to have known Rosas for 25 years, added: My Lord, I know of these tortures being inflicted.
At the time that Oribe invaded the Banda Oriental, with the army and the Masorca [sic] commissioners of Rosas, I was residing on my estate in the country.