You have any additional information such as DOB, DOD, and place of birth. Also found additional last name spelling such as Lassus, Lashus, and Lussice. Guess this was a very common misspelled name.
Dear Ms. Pillion,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located Carded Records Showing Military Service of Soldiers Who Fought in Volunteer Organizations During the American Civil War and Indexes to the Carded Records of Soldiers Who Served in Volunteer Organizations During the Civil War in the Records of the Adjutant General's Office (Record Group 94). These series have been digitized in part, however we were unable to locate a digitized service or pension record for him. There may be a file for him in a series that has not been digitized. We also located multiple record series specifically about military surgeons during the 1860s, however these records have not yet been digitized. These records are in the custody of the National Archives at Washington, DC (RDT1). Please contact RDT1 via email at firstname.lastname@example.org for more information.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgment as well as a substantive response to your reference request from RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
We also searched Ancestry and Fold3 and were unable to find a record for him in any of the National Archives records that they have digitized. We did locate the following information in the Ancestry data collection U.S., Civil War Soldier Records and Profiles, 1861-1865.
- Name: Benjamin Lasius
- Residence: New York City, New York
- Enlistment Date: 28 May 1862
- Rank at enlistment: Surgeon
- Enlistment Place: New York City, New York
- State Served: New York
- Survived the War?: Yes
- Service Record: Commissioned an officer in Company S, New York 11th Infantry Regiment on 28 May 1862. Mustered out on 16 Sep 1862 at New York, NY.
- Sources: New York: Report of the Adjutant-General
It was not clear from the information in their database exactly which report this was referencing as the source or which repository has custody of the report in question. Because he was affiliated with a New York regiment, you may also wish to contact the New York State Archives.
The National Archives does not maintain birth and death records. Based on his date of commissioning, he most likely would have been born prior to 1847. New York did not create official records of births during this time. Please search for alternate sources for information about his birth. See How to Find New York Birth Records for more information.
Prior to 1881, New York State did not create death records. The New York State Department of Health has death records starting in 1881 for all of New York State except New York City. See their Death Certificates page for ordering information. The New York City Department of Records and Information Services (DORIS) has death records for New York City prior to 1948. Please review their chart details as to which years are available for the various boroughs.
We hope this information is helpful. Best of luck with your research!