Yes! Your word expedition starts here.

coup de main

a surprise attack or unexpected movement

Sightings:

Coping, coppices, and coupons

Cleaning Pakistan's Aegean stables

A plot against Detroit
(explore for more Great Lakes ethnohistory)

Bedazzling the President

Who needs a big army when you've got white rocks?

Harriet Beecher Stowe: Up the stair-case in a single bound

A D-Day photo gallery

Pondering the cyber-frontier


Note: In French coup de main can also denote a "favor" or "helping hand"

Neighborly aid
(explore for a Cajun encyclopedia)

Untranslatable idioms
(explore for language software reviews)

Pick a bail of cotton and bring on the la-la music

.