- We could not enforce the decisive blockade or interruption which is possible from surface vessels.
- I spoke the other day of the colossal military disaster which occurred when the French High Command failed to withdraw the northern Armies from Belgium at the moment when they knew that the French front was decisively broken at Sedan and on the Meuse.
- This decision was painful, but it was also right, because the fortunes of the battle in France could not have been decisively affected even if we had thrown in our entire fighter force.
There are no more uses of "decisive" in Their Finest Hour.
Typical Usage (best examples)