His sister, Katherine Lawrence Hasbrouck, married Congressman Ira Davenport,[3] and his brother Severyn Bruyn Sharpe was the Ulster County judge in 1898.

[7] Among his fellow classmates there at the academy were several men who would, like Sharpe himself, eventually attain the rank of brigadier general or higher in their military careers, such as George W. Goethals, William C. Rafferty, John L. Chamberlain, Charles J. Bailey, Frederick S. Strong, James B. Aleshire, James B. Erwin, William S. Scott, and George Bell Jr.. Sharpe served on frontier duty with the 4th Infantry Regiment at Fort Laramie, Wyoming for the next year and a half.

[7] About fifteen months later on September 12, 1883, Sharpe was reappointed to the army as a commissary of subsistence with the rank of captain and assigned to temporary duty at New York City.

On October 3, 1900, he was elected as a hereditary companion of the New York Commandery of the Military Order of the Loyal Legion of the United States by right of his father's service in the Union Army during the American Civil War.

Upon his return to Washington in September 1907, General Sharpe submitted recommendations to the War Department urging the establishment of a supply corps.

While these were not adopted, they undoubtedly proved helpful when the subject of consolidating the Quartermaster, Subsistence, and Pay Departments into one agency was being considered four years later.

But when his classmate, General Aleshire, was appointed, Sharpe accepted a subordinate post in the Corps and worked devotedly to prove the value of consolidation.

However, their uncoordinated procurement resulted in excessive and unbalanced railway shipments that overtaxed port facilities and finally developed into a serious congestion of the railroad system in the winter of 1917–18.

While serving on the Council, General Sharpe was required to delegate all his administrative duties to an acting chief quartermaster designated by the Secretary of War.

General Sharpe was a Companion of the Military Order of the Loyal Legion of the United States by right of his father's service in the Union Army during the American Civil War.