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She taught semaphore - a visual signaling method allowing information to be conveyed at a distance - to troops ahead of D-Day and helped to test the Mulberry Harbours used in the invasion.

Whenever someone got into trouble, Barron would unfurl her semaphore flags and signal for help.

And do we need so much semaphore to understand our relationships?

On the left shoulder, front, a cluster of schematic semaphore signals evokes his years in the Marines.

Today, to help relative newcomers navigate potential April Fool’s foibles, our crack “Now & Then” team shares some quirky codes and stubborn semaphores from “Then” days that persist in the “Now.”