 An historian of the 240th AAA (Anti-Aircraft Artillery) Group, a former Maine Army National Guard unit, has concluded that numerous subsequent Volunteer Maine Militia and Maine National Guard units inherited the lineage of the 1st Maine via the Portland Light Infantry company.From 1924 through 1944 this was the 240th Coast Artillery Regiment.As of 2018 this lineage is carried by the 240th Regional Training Institute, Maine Army National Guard, in Bangor.