Romerson's military career shows the diverse attitudes of officers to the Native Hawaiians and people of color who served on segregated units during and shortly after the Civil War.
Many Hawaiians sympathized with the Union because of Hawaii's ties to New England through missionaries and the whaling industry, and the opposition of many people in the islands to slavery.
[17] Historian Ruthanne Lum McCunn noted, "The military records of Hawaii-born Prince Romerson reveal both his service [with] the US and the diverse attitudes of officers toward people of color.
Between the Union victory at Appomattox and the 5th Regiment's reassignment to Clarksville, Texas, Romerson fell ill and was sent to the Corps d'Afrique USA General Hospital in New Orleans on July 8, 1865.
Never recovering sufficiently to rejoin his regiment, he was transferred to De Camp USA General Hospital, Davids Island, New York, before being mustered out on October 9, 1865.
[11][15][19] In the post-war period, Romerson sought to rejoin the military, and in 1867 he enlisted in the 39th United States Infantry Regiment at the reduced rank of private.
[11] Prince Romerson's service in the war illustrated one of the many examples of Hawaiian recruits assigned to segregated regiments and the diverse attitude towards them.
Renewed interest in the stories of these individuals and this particular period of Hawaiian-American history has inspired efforts to preserve the memories of the Hawaiians who served in the war.
[20] On August 26, 2010, on the anniversary of the signing of the Hawaiian Neutrality Proclamation, a bronze plaque was erected along the memorial pathway at the National Memorial Cemetery of the Pacific in Honolulu recognizing these Hawaiʻi Sons of the Civil War, the more than 100 documented Hawaiians who served during the American Civil War for both the Union and the Confederacy.
The exact number still remains unclear because many Hawaiians enlisted and served under anglicized pseudonyms, and little is known about them due to the lack of detailed records.
The history of Hawaii's involvement and the biographies of Romerson and others were written by historians Ruthanne Lum McCunn, Anita Manning and Justin Vance.