"[3] In 1909, shortly before the AEA was disbanded,[4] Curtiss partnered with Augustus Moore Herring to form the Herring-Curtiss Company.

[1][a] With the onset of World War I, military orders rose sharply, and Curtiss needed to expand quickly.

[14] An ancillary operation was begun in Toronto, Ontario, that was involved in both production and training, setting up the first flying school in Canada in 1915.

[20][21] The Curtiss Aeroplane and Motor Company worked with the United States' British and Canadian allies, resulting in JN-4 (Can) trainers (nicknamed the "Canuck") being built in Canada.

After the war, large numbers of JN-4s were sold as surplus, making influential as the first plane for many interwar pilots, including Amelia Earhart.

The Curtiss HS-2L flying boat was used extensively in the war for anti-submarine patrols and was operated from bases in Nova Scotia, France, and Portugal.

Curtiss also worked with the United States Navy to develop the NC-4, which became the first aircraft to fly across the Atlantic Ocean in 1919, making several stops en route.

[27] Thirteen days later, Jimmy Doolittle won the Schneider Trophy in the same aircraft fitted with floats with a top speed of 232.573 miles per hour (374.290 km/h).

[29] Glenn H. Curtiss sponsored the Atlantic Coast Aeronautical Station on a 20-acre tract east of the Newport News boat harbor in the Fall of 1915 with Captain Thomas Scott Baldwin as head.