HORSE CAVALRY • DICTIONARY ONE.COM • Definition of Horse cavalry

... real corporate abuse which the corporation, either from wickedness or folly, was unwilling to remedy. Of the measures introduced in the interest of corporations there were also some that were proper and some that were improper. The corrupt legislators, the "black horse cavalry," as they were termed, would demand payment to vote as the corporations wished, no matter whether the bill was proper or improper. Sometimes, if the bill was a proper one, the corporation would have the virtue or ...

— Theodore Roosevelt - An Autobiography by Theodore Roosevelt • Theodore Roosevelt