Basically echoing what STLRN said -- to those who claim the Garand was the ideal rifle for how we fought wars back then . . . we didn't actually fight them that way back then, either.
Various people (including people within the US military) had already figured out that infantry rarely engage beyond 300 meters or so by the end of World War One, when the machinegun, indirect fire, and airpower had mandated everybody wear uniforms basically the color of mud and disperse as much as possible to survive exposure on the battlefield when up out of the trenches.
Consequently, .30 caliber full power rifle rounds were more round than was needed for the way combat really happened by 1917 and 1918. During the interwar years, the US military looked at a lot of smaller rounds (down to .25 caliber) that look, performance-wise, a lot like modern assault rifle rounds, including the .276 caliber round the Garand was originally designed to fire.
The 30-06 Garand was by no means an ideal weapon for the way combat was fought in those days, or for the technology of the era (whatever George Patton might have said on the matter). It was, however, a better weapon for how war was fought back then (and how it is fought now) than its bolt action contemporaries and it was fielded in massive quantities, and is justifiably famous because of this. It left some things to be desired, but was better than the alternatives.