The Parabellum was withdrawn from further consideration when DWM decided not to produce a sample series past the first two prototypes. Each company that passed the initial trials had to build a series of 100 test pistols at their own expense. Colt built 100, Savage built 181 as apparently 81 were lost before the Army received them, and DWM built only the initial two. All three had passed the initial tests to the extent they were considered satisfactory for service.PF wrote:Colt .45 automatic
Browning (UK) and P-38 {Germany}; TT-30 {USSR}
I put these last three in second place-simply because the caliber is smaller than a .45
The luger I place dead last for the simple reason it was not adopted by the US Army it failed the dirt/water test; another reason the .45 was chosen is because .38 pistol used in the Phillippines 1899-1901 wasnt strong enough in battle against charging warriors...
Interestingly, the Navy and Marine Corps were trialing the Remington Model 53 (a .45 ACP Model 51), but with the outbreak of WWI decided to cut costs by adopting the same handgun as the Army. At the time this was not necessarily standard procedure, often the Army and Navy would adopt different small arms and even cartridges.