A major influence on the direction that his studies took was the entry of the United States into World War I in the spring of 1917. Curry wanted to serve his country, and decided that he would be more likely to see action if he had a mathematics training rather than if he continued the pre-medical course he was on. Anyhow he had enjoyed the mathematics course he had taken and had done very well in the course.
Isang malaking impluwensiya sa direksyon na kanyang pag-aaral ay kinuha sa entry ng Pilipinas sa World War ko sa tagsibol ng 1917. Kari kinakailangan para pagsilbi sa kanyang bansa, at nagpasya na siya ay magiging mas malamang na makita ang aksyon kung siya ay nagkaroon ng pagsasanay sa matematika kaysa sa kung siya ay patuloy ang pre-medical course siya sa. Anyhow niya masaya ang matematika kurso niya kinuha at had tapos na maayos sa kurso.