# Cornelius H. Mack

Cornelius H. Mack (September 1, 1885 – August 22, 1958) was a Rear Admiral in the United States Navy. He served as the Chief of the United States Navy Dental Corps for a brief time in 1922, and was the first dental officer to be permanently promoted to Rear Admiral.

## Early life and education

Cornelius Henry Mack was born in West Springfield, Massachusetts on 1 September 1885. He graduated first from West Springfield High School, and then from the Harvard University Dental School in 1906 with a Doctor of Dental Medicine. He joined the recently formed United States Navy Dental Corps on 2 March 1914.

## Military career

History of Assignments :
| Assignment | Dates |
| Twelfth Naval District, San Francisco | September 1943 - November 1945 |
| Fifth Naval District, Norfolk | January 1943 - August 1943 |
| Naval Training Station, Naval Base, Norfolk | May 1937 - January 1943 |
| Mare Island Naval Shipyard | October 1933 - May 1937 |
| Naval Hospital New York | December 1929 - September 1933 |
| Marine Detachment, American Legation, Peiping, China | December 1928 - December 1929 |
| Naval Station Cavite, Philippines | |
| Boston Navy Yard | July 1924 - September 1927 |
| USS MacLeish (DD-220) | June 1924 - July 1924 |
| USS Pittsburgh | August 1922 - June 1924 |
| Chief, United States Navy Dental Corps | February 1922 - August 1922 |
| Naval Dispensary, Washington DC | February 1922 - August 1922 |
| USS Panther | January 1922 - February 1922 |
| USS Pennsylvania (BB-38) | September 1919 - January 1922 |
| Sixth Regiment Marines | September 1917 - September 1919 |
| United States Naval Academy | March 1914 - September 1917 |
Cornelius Mack's first military assignment was as an assistant dental surgeon at the United States Naval Academy, where he served until he was reassigned to the 6th Marine Regiment out of Quantico. He was with this unit when it was deployed to France during World War I.

### Combat service during World War I

While attached to the 6th Marines, Cornelius H. Mack saw combat several times on the western front, most notably during the Battle of Belleau Wood, and the Battle of Soissons. He is credited with continuing to care for and evacuate the wounded despite coming under attack multiple times, and with other displays of gallantry. For his actions in these battles, Cornelius H. Mack was awarded the Navy Cross, multiple Citation Stars, three of which were later upgraded to the Silver Star. He was also awarded the Croix de Guerre with Gold Star
   "For extraordinary heroism and devotion to duty with the 6th Regiment, U. S. Marines. In the action at the Bois de Belleau, (France), on June 12, 1918, when his dressing station was subject to a heavy gas bombardment, he remained on duty and carried on the evacuation of the wounded, refusing to leave until all wounded and Hospital Corps men had been removed to a place of safety; as a result he was severely gassed. In the action at Vierzy (France), on July 19, 1918, he accompanied the advance and was exposed for fifteen hours to the fire of machine guns and artillery, performing his duties with marked coolness and precision.
Suffering from both acute gas inhalation and the 1918 influenza, Cornelius H. Mack was medically evacuated from the front lines on 20 July 1918. He remained assigned to the 6th Marines until September the following year, when he was reassigned to the USS Pennsylvania (BB-38). From there, he was assigned to a variety of both sea and shore tours of duty, including overseas duty in the Philippines and China, and also served as a clinical professor of oral surgery at New York University.
On 15 June 1932, he received an Honorary Doctor of Laws (LL.D) from the College of the Holy Cross. In 1936, Cornelius H. Mack, along with many other officers including Alexander G. Lyle, filed suit in the United States Court of Claims over a pay dispute. Citing the 1935 W. W. Hargrave v. The United States decision, the Court awarded Mack $1370.05, equivalent to $25,242 in 2019.
Cornelius H. Mack was transferred to the retired list on 1 September 1943, and promoted to Rear Admiral on that date. He continued to serve on active duty until November 1945 due to World War II.
Cornelius H. Mack died on 22 August 1958 in Largo, Florida, and was interred in Arlington National Cemetery.