If anyone else is interested in specifically Rev War stuff I have information to share. It was one the first organizations to be comprised of US Army civilian workers. It was not until 1901 that nurses were given regular Army status even though civilian nurses in earlier wars performed similar roles. After the American military developed other mechanisms to perform the functions traditionally assigned to this branch of the service, its very existence was rapidly forgotten. Both Goldich and I had axes to grind in 1981, which was less than a year after the graduation of the first women from the service academies.
Contemporary sources make it clear that official recognition, at least, did exist.
Official slots for regimental laundresses continued to be funded until General Orders No. 37 of 1878 abolished the position in the American army. Approval and appreciation were something else. Attitudes toward Army women were at best patronizing, at worst contemptuous. Like the cavalry horses, they might serve with the Army but they were never respected as soldiers.