Known as an incurable "bad boy", Quentin, was known for pelting Secret Service members with snowballs, tossing spitballs at official portraits, and, once, created a baseball diamond in the White House Lawn.
Lieutenant Roosevelt was also a good student, with an incredible mechanical aptitude, and was accepted to Harvard University in 1915.
When WWI erupted, Lieutenant Quentin Roosevelt, thinking his mechanical skills and his fluency in French would be useful, enlisted in the 1st Reserve Aero Squadron, before moving to the 95th Aero Squadron. In addition to learning to pilot, he also handled the supplies for his squadron. While in France, he tussled with a higher ranking officer (Captain) about boots for his men, which he got, despite threats of physical violence and court marshall (a Major intervened). Lieutenant Roosevelt was known to never rely on his family name (and often wouldn't give it), choosing instead to build his own reputation.
At the commencement of the 2nd Battle of the Marne, on July 14, 1918, Lieutenant Roosevelt was shot down behind enemy lines and killed. He rests in the Normandy American Cemetery and Memorial in Colleville-Sur-Mer, France.
In 1919, Harvard University awarded Quentin Roosevelt and A.B. (War Degree) in the Class of 1919.
His brother Kermit, compiled and edited his letters, publishing the book Quentin Roosevelt: A Sketch with Letters.