After entering Holland and Belgium, the Germans completed their conquest of France in short order. They made no appreciable use of parachutists or other air-borne troops, possibly because they were achieving rapid successes with their air-supported ground troops. German mechanized spearheads frequently performed services in the French rear that might have been otherwise unobtainable except with the use of air-borne surprise. The impression prevails that the Germans did drop a certain number of individual parachutists disguised as civilians behind the French lines, but it is difficult to verify this alleged augmentation of the Fifth Columnists, or to establish it as a matter of any military consequence.