..... (March 29, 1911) that the Colt Model 1911 was officially adopted by the Army. Interesting history of the design, development and testing that led to it's successful adoption is here:
Among the areas of success for the Colt was a test at the end of 1910 attended by its designer, John Browning. Six thousand rounds were fired from a single pistol over the course of two days. When the gun began to grow hot, it was simply immersed in water to cool it. The Colt gun passed with no reported malfunctions, while the Savage designs had 37.