From the publisher:
Got a small adventuring party and need some trusted minions to round it out? Remember the good old days when you could have loads of henchmen? If so, Henchfolk & Hirelings is for you!
Based on the classic rules presented in the 1st edition of the world's most popular roleplaying game, Henchfolk & Hirelings provides an alternative system to Leadership for handling your character's most favoured companions. Henchfolk & Hirelings also presents 100 potential henchmen for your PCs, each benefiting from basic information (alignment, sex, race, class and ability scores) as well as notes detailing their background, personality, mannerisms and distinguishing features.
Alternatively, the GM can use the 100 NPCs within to depict fellow adventurers and other persons of note the PCs encounter on their adventures.