1. No military leaders before modern period had fought as many battles(60s) as Napoleon.
Fighting battles, and even winning them, is not the mark of a great commander.
Napoleon won most of those battles, and he was invincible until Aspern-Essling in 1809 in over 30 battles he fought until that point.
Except that there are instances pre-Aspern in which Napoleon performed poorly.
Napoleon was, even at the battle of Waterloo with his failing health and ability, the best among his peers. He tricked Wellington twice(by pre-emtively marching into Belgium and feeding Wellington wrong direction of attack),
The best amongst his peers to the point that he lost. Even after his peak, Napoleon had his good campaigns, 1815 was not one of them.
and would have won at Waterloo if it weren't for serious blunders committed by him and his subordinates.
Yeah, this kinda sums up my point there.
2. No technological/tactical advantage against his adversaries.
The forces Napoleon commanded were generally superior to those he faced, particularly in artillery, cavalry and light troops. They also tended to be better led.
3. Operation-art(strategy) wise, Napoleon was unparalleled.
Napoleon's maneuver and concentration of forces were simply unmatched by any history figures. I don't think there is anyone who can hold a candle to him in strategical level. He overcame twice the enemy in Italian campaign by striking separated enemy forces in a quick succession. He jumped into the middle of advancing 4* larger enemy force in 6 days campaign and beat Prussian army 4 times by maneuvering.
And also led the 1812 campaign in Russia, which is one of the great examples of poor operational/strategic thinking.
This is why, based on his ability at prime before 1809, I think Napoleon is the greatest tactician in history; specifically, I deem him the better of Hannibal Barca, Khālid ibn al-Walīd, Alexander the Great, Belisariusand and Caesar. What do you think? How do you think other tacticians(those mentioned here and more) in history compare to Napoleon?
Tactical skill isn't particularly important, at least not when compared to operational/strategic skill. Napoleon certainly has a lot of tactical skill, but his real greatest achievements are operational. The 1805 campaign is probably the best example, Austerlitz is certainly a great victory, but Ulm is the true masterpiece.
Certainly, Napoleon was a very competent general, aided by some very competent subordinates. His first Italian campaign, the 1805 campaign and the 1806 campaign (which admittedly was somewhat flawed) show just how good he could be.
Greatest general ever though, that's kind of hard to work out. Certainly one of the greats of his age, but things change so much over the course of history. Greatest ever is impossible to judge.
I would point here, directly answering to the OP, that Napoleon victories tended to be extremely costly, each battle ''won'' by Napoleon killing scores of the finest military tool in Europe at the moment : the Grand Army, hardened before Napoleon took control of it by a good decade of war.
(example : the campaign of Egypt, which costed a fleet and 30 000 elite soldiers out of 40 000...for absolutely nothing but ''glory''. )
The 1805 campaign was massively one-sided in its casualty ratios. There are battles were he resorted to brute force, Eylau, Wagram, Borodino and others are battles were Napoleon was far from his finest performances, yes, but at his peak the man won his victories rather cheaply.
Egypt is a massive blunder, yet another fool falling for the old "if we go through Egypt we can destroy the British".
''Foraging'' (or rather pillaging) is a poor subsitute to real logistics, and work only when campaigns occurs over rich areas....
In Spain or Russia, it did not worked so well.
The problem in Russia wasn't foraging, it was that Napoleon took a force far too large and then led it far too deep. The system wasn't at fault, the leader was.
"This is why, based on his ability at prime before 1809, I think Napoleon is the greatest tactician in history; specifically, I deem him the better of...."
See, there's the problem. Cutting off at a certain point kinda ruins the assessment. It's like going "If you forget all his failings, Stalin was actually a really nice guy. Bit lacking in any personality whatsoever, in fact his life can be summed up as a birth date and a death date, but not a bad guy."
Austerlitz itself was a brilliant battle-but how many French soldiers died of hunger, exhaustion or disease during the forced marches ?
(Answer : impossible to know. But Napoleon started with 200 000 soldiers and ended up with 72 000 at Austerlitz. Most of the missing ones were of course garrisons, stragglers and such....but at very least, it's 10 000-20 000. )
18th/Early 19th century campaigning has its costs, particularly where fast movement is concerned. That's not to say you can't have a fast, cheap march, the Blenheim campaign is a great example of that, but losing men on the march is not necessarily a black mark.