[Northern Yankee]

Wasn't also the words "Flash" and "Thunder" used to help identify each other?

I remember reading accounts of it in Stephen Ambrose's, Band of Brothers.

[tanknetter]

Wasn't also the words "Flash" and "Thunder" used to help identify each other?

Flash and Thunder was also a mimicking of the cricket. "Flash" was the challenge, "Thun-der" was the response. With the cricket, one click (two actually, since there was a click when the tab was depressed, another when it was released) was the challenge, two was the response (so "click-click" was met with "click-click ... click-click).

The allies also had those small parachute dolls that were loaded with firecrackers that were dropped to help make it seem that the Parachute Infantry troops were all over the place (which, thanks to to the botched drop, they actually WERE).