As the US Army advanced in Europe in WW2 it investigates all manner of things, including what had knocked out German tanks. One surprising finding was that only a single digit percentage of the Panzers claimed as knocked out by “tank buster” rocket firing allied aircraft could be found. Prisoner interrogations confirmed that Panzer crews had been very concerned about rocket firing aircraft, but also that these prisoners admitted that few of them had actually seen a tank taken out by rockets.
That surprised the Army brass, because they had observed that Panzer units repeatedly attacked by tank busters on their way to the front were greatly weakened and generally performed poorly. Upon further review, the Army concluded that even though the tank busters kill claims were wildly exaggerated, they were nonetheless responsible for devastating Panzer units caught moving up to the front.
The rockets might not seriously damage a Panzer without a direct hit at an unlikely place and/or angle, but they were orders of magnitude more effective against the thin skinned support vehicles in the column. So even if the Panzers of a Panzer unit made it to the front, their stocks of fuel, lubricants, ammo and spare parts did not. Neither did the logistical and repair personnel. They were dead, wounded, or, if they survived the destruction of the irreplaceable support vehicles, being pressed into ersatz infantry units.
Napoleon said, “An army marches on its stomach.”