In October of 1961 a group of boys of Saint Malachy’s Church approached the assistant, Father Creager, and asked him if their was any possibility of establishing a boy scout troop in the parish with Saint Malachy as the sponsoring institution.Taking the request of the boy scouts to the pastor, Father Herbach, it was well received and solicitations were made to establish a group of men from the parish to form the committee for the troop. Many fathers of the boys seemed very interested and a committee was soon formed.

   McCarthy, field executive of the Three Rivers District of the council, was approached and the petition was placed in his hands. The required forms were given to the committee and an application was sent to the National Office of the Boy Scouts of America for final approval.  The application was approved December 12, 1961. The charter was officially and formally presented to Father Herbach shortly thereafter.

   In 1992 Boy Scout Troop 627, which was sponsored by the Geneseo Don Cherry V.F.W. Post #5083, was merged into Troop 100.  Since that time Troop 100 has had dual sponsorship of both Saint Malachy's Church and the V.F.W. 

   Troop 100 has a rich scouting history of camping, hiking, canoeing, backpacking, and comminuty service for over 50 years.  Over 700 young men have experienced scouting through Boy Scout Troop 100 over this period, and over 50 of them have attained the rank of Eagle Scout.  Troop 100 has had Scouts living throughout Henry County Illinois as members.