[Mariner]

Defilade was first developed and mastered by the American Revolutionaries and practiced with the American Long Rifle from distance.

The tactic which defeated the biggest and strongest army since the Romans...Britain.

[ought-six]

Defilade tactics were used earlier than the War of Independence (for instance, the tactic was used twenty years earlier during the French & Indian War, but by many of the same people — the American colonists — who later mastered it during the WOI). So, you’re right in that the same people were involved.