Most impressive tactical operation of WWII?

Allied Invasion of France: Operation.
Normandy Landings: Battle.
Omaha Beach: Engagement.

Battle of France: Operation.

The line isn't blurry so much as the common names being used inconsistently.

I always saw it like this:

Allied Invasion of France: Strategic Operation
Normandy Landings: Tactical Operation
Omaha Beach: Battle/engagement
Battle of France: Theatre
 
Sure it's a decisive victory against half-trained otherwise poorly equipped, supplied, and organized enemy troops, much like most of Barbarossa was.
I linked the article, because not everyone is familiar with it and it explains the situation in detail. You aren't the only one reading this after all.
By American forces who out-maneuvered and out-fought their opponents : it shows the Americans were more than capable of meeting their opposition tactically and defeating them, and hencei t deserves a rank as an effective tactical battle.
 

Deleted member 1487

By American forces who out-maneuvered and out-fought their opponents : it shows the Americans were more than capable of meeting their opposition tactically and defeating them, and hencei t deserves a rank as an effective tactical battle.
When their opposition is hastily tossed together conscripts without any recon elements and the American forces are combat vets who were in training for years before even entering combat:
https://en.wikipedia.org/wiki/Battle_of_Arracourt
the two panzer brigades had the newest Panther tanks and fresh crews, but had virtually no battle experience, and insufficient training. The need to quickly respond to the sudden advance of the 4th Armored, as well as inadequate fuel supplies, had left the crews with shortened training schedules and little proficiency in tactical maneuvering in large-scale, combined arms operations.[4]

Earlier sorties by U.S. fighter bombers caused some German panzer units to fail to arrive in time for the battle, as they were preemptively damaged or destroyed in separate encounters with other Allied forces.[6]

As 5th Panzer Army was not equipped with integral scouting units, the Germans were forced to advance blindly against the Americans, whose positions were shrouded in thick morning fog.[3] Reinforced with additional tank, infantry, and cavalry elements, and aided by the Germans' persistence in repeating the same plan of attack, CCA was able to locate and prepare for battle on ground of its own choosing.[3]

Battle of Arracourt
Date
18–29 September 1944
On 21 September, with skies clearing, P-47 Thunderbolts of the 405th Fighter Group, 84th Fighter Wing of the U.S. XIX Tactical Air Command were able to begin a relentless series of attacks on German ground forces.[12] In addition to missions of opportunity flown by XIX TAC fighter-bombers, CCA was able to call in tactical air strikes against German panzer concentrations.[3] The 4th Armored's close relationship with the USAAF's XIX TAC and mastery of ground-air tactical coordination was a significant factor in destroying the offensive capability of the German armored formations.[13]
So it was comparing one of the very best of US armored units to one of the worst German later war ones. Ground combat was inconclusive before the weather cleared and air strikes turned the Germans into a shattered mess.

Without a doubt a highly decisive, effective battle for the Americans; not really impressive when you factor in all the details.
 
If Corps sized operations count, at least on one side, how about Operation Compass?
https://en.wikipedia.org/wiki/Operation_Compass

Where one side attacked an enemy that outnumbered it Five to One, and had air-superiority.
And whilst suffering a tenth of the killed and wounded managed to capture 4 times its own strength.

(The what if-er's always seem to complain that it didn't do better?)
 
Not really in the same league as some here but one of the great ones to my mind is Australian 2/30th Bn’s ambush of IJA at Gemencheh in Malaya 1942.
 
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