They were also poorly equipped, ill-led, and badly trained.
Congratulations - you just described most every draftee army....I see the draft didn't save Sadaam's sorry carcass.
Well, most countries on the planet are "poorly equipped, ill-led," etc.
There are quite a few counters to your point:
German armies of Franco-Prussian war, Austro-Prussian War, WWI, WWII
The German army of WWI was most certainly poorly led for signifigant portions of that conflict - the only thing masking that is the equally poor leadership of the conscripts fighting on the other side. Even the mighty WWII version was critically short of such basic items as handguns, tanks, trucks, etc for all of hte war.
Janissaries (truly slave-soldiers)
I'll concede that one, but submit that it is a special case
Mamluk (true slave-soldiers, again)
Don't know about them...
US army of Civil War,
...few to no rifled muskets, and until Grant, poorly led...
WWI,
short of EVERYTHING, but especially handguns, rifles, shotguns, artillery, planes
WWII,
started the war with P-36s and Brewster Buffaloes, B-18 Bolos, short of M-1 Garands, never did field a quality tank until the very end of hostilities (Sherman = "Tommy Cooker")
Korea,
Mustangs and Corsairs (later still inadequate P-80s and F-84s) against Mig-15s, had to rebuild WWII Sherman "Easy Eights" to have tanks at all, bombing with B-29s out of mothballs, and how did that whole "Task Force Smith" thing work out? Altho I grant Walker was leading them brilliantly - his death and "Bug Out Doug" made sure he never got the credit.
Vietnam
plenty of equipment, but surely you don't submit that they were anything BUT ill led: McNamara ring any bells?
Confederate army of Civil War
chronically under-equipped - short of such basics as rifles, shoes, railway rolling stock. For the most part brilliantly led: the unfortunate truth is they had to be PERFECTLY led, and they weren't.
Brit army of WWI,
Surely you don;t mean to count the trench meatgrinder of Europe AND Gallipolli as anything other than "ill led"?
WWII
...singapore, north Africa until Monty gets there, the BEF and the debacle at Dunkirk,...
Brit Navy at most times
...Task Force Z, sending battlecruisers to fight battlships against the Bismark AND the Battle of Jutland, losing Glorius off of Norway, & getting their tails kicked almost all the time they went up against the US Navy.
French army in the Napoleanic era
How did that whole Russian campaign work out for them?
Japanese army of Russo-Japan war & WWII
The WWII version proved capable of defeating ONLY the Chinese - and not even that in the long term. How did this might army do when General Zhukov was sent to stop their foray into Russia? Or against Brits and Americans on anyting like even terms? Seems to me they fell "like cherry blossoms" every where they went...and I blame the entire Japanese attitude for draftees for that - they were called "One and a half Sen" - literallyt the cost of the postage to send them their draft notice. And they were squandered as if that was all they cost.