How about we do our (un)patriotic duty and - instead of arguing with each other - voluntarily mash our own country/military by revealing their mistakes during world war II?
I’ll go first
(Stupid) Country: Finland
Place: The Winter War 1939-1940
So, Finland (smaller participant in this conflict) was soon needing more soldiers, and then everybody remembered that during peacetime many fit-and-able men were (unwise, but Finland was young naive nation failing to see the signs of the times) freed from doing their basic military training. They were given an extra-quick (and equally useless) basic training.
So, the big question was: How to deploy these (inexperienced) men?
#1) Spread them to the existing formations, where they could quickly learn the art of warfare from the experienced soldiers.
#2) Create new completely, entirely and totally inexperienced formations, lead by (semi)inexperienced officers.
For some reason, it was decided that #2 is clearly the way to go. :-/
And to make things “perfect”, it was decided to use some of these new formations to do a counterattack – Experienced officers were horrified.
The time for the counterattack came… and passed… and finally, wayyyy to late, these new formations managed to arrive at the point where the attack would/was/may/already did/etc start. Of course, the best moment for the attack was lost. After a lot of disturbance and trouble, some sort of attack was done, causing (at least) a lot of noise. That time the new formations avoided the heavy casualties (which makes one wonder how many meters they actually advanced ;-D).
Unfortunately, and inevitably, the first real battles resulted heavy casualties and panic in those new formations. Surely that was not the best way to handle this matter.
_