Grafulla's most popular piece was composed for the 8th Regiment, a New York state militia based at the Kingsbridge Armory in the Bronx.
There are elements of the Italian and German march in Washington Grays, with running sixteenth notes and responding bass voices creating a counterpoint.
Frederick Fennell wrote of this march: "Masterfully simple, effectively contrasting, its incessant flow of musical ideas is overwhelmingly convincing.
This march represents technical difficulties for band members (it is graded a "5" in a system of "1" being the easiest and "6" the most difficult).
The Library of Congress' Catalogue of Copyright Entries uses both "Grays" and "Greys" for different arrangements of the march.