Hi, I have used the following book for PA: The Pennsylvania Line Regimental Organization and Operations, 1775-1783 by John B.B. Trussell ISBN 0-89271-053-5 Although this book concentrates on the organizations which were or became part of the Continental Army, he says in the Preface: "Although volunteer units, called "Associators," existed ...1775-1777, there was no militia organization until an act was passed on March 17, 1777, by the Assembly, and implemented by the Supreme Executive Council. Simply stated, that act provided for the enrollment of all able-bodied white males between the ages of eightenn and fifty-three. These were organized in local "training companies," and each was assigned to one of eight "classes." When militia services were needed, the member of one or more classes from specified counties were ordered into service for a maximum of two months. Although the militia of a given county might be called up more than once, the second call would not apply to a class which had already served until an entire cycle of all eight classes had been completed. The system had the advantages of equalizing the obligation of military service and of avoiding the depopulation of any particular area of military-age men. It had the disadvantage, however, of insuring that men called for militia duty not only had no experience from previous call-ups but also, as they came from the same class but from different localities, had never trained or worked together before.(8)" Footnote (8) See 'The Military System of Pennsylvania During the Revolutionary War' (Pennsylvania Historical and Museum Commission Information Leaflet No. 3). [end] Diane Graham <meregra@cableone.net> wrote: >Thanks for any more insights anyone may have about this. Although most of the above has been mentioned before, the last sentence and footnote reference may be of interest. Jan