Originally Posted by
Yukitsu
The exact same was said and done of the Canadians during WWI, but none of those opinions of their discipline seemed to matter to their efficacy. The fact is, given two camps of ill disciplined, poorly trained, rancorous militia, the one with experience at all, is still going to be a more effective force at least through morale than the ones that are ill disciplined, poorly trained, rancorous militia that haven't had any experience on a battlefield. In any event, I wouldn't consider the relative minor (in terms of loss comparisons) losses in the west, and the victories in the east as having much to do with the commanders chosen on either side. No one can boast have having had any truly brilliant or revolutionary leaders during the war (Not even Lee IMO), and I don't think any of them were atrocious lemons either (Not even Hooker). I think the actual troops, or if not that then the weapons they used must have played some factor in the difference.
It's also not as though the approximately 50,000 militia from the Mexican American war would have been entirely insignificant in terms of numbers. The Union and Confederate armies at the start of the war weren't breaching even say, 500,000 men, or they were at the very least exceeding a 1 in 10 ratio. They were certainly not so few that they couldn't have even trained the soldiers they were recruiting, that claim is ludicrous.
By 63, certainly the Confederates were running on raw recruits as much as the Union, but you don't find people introducing sweeping doctrine changes in a 2 years time span during the course of a single war. I am still confident that the idea to avoid close combat was due in a large part to earlier experience from the Mexican theater rather than the weapons of the time. (and even without, the raw recuits wouldn't have been better off doing bayonet charges anyway.)
Case in point, over 40 years later, the world concluded that close combat was to be the deciding action against entrenched defenses when they observed the Russo-Japanese war, partly causing the god awful doctrine of human wave assaults during the onset of WWI. By then, the weapons were more advanced, not less so.