What does Gribeauval System do in AoE3?

Falconet: damage +25%; Heavy Cannon: damage +20%; Horse Artillery: damage +25%; Culverin: damage +25%. The game says: "Falconet, Heavy Cannon, Culverin, and Horse Artillery damage increased."

Home City card

Gribeauval System

Gribeauval System (tech ID HCXPGribeauvalSystem) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Industrial Age. Effect: Falconet: damage +25%; Heavy Cannon: damage +20%; Horse Artillery: damage +25%; Culverin: damage +25%.

Quick answers (3)

Which civilizations have the Gribeauval System card?: French.
What does Gribeauval System do in AoE3?: Falconet: damage +25%; Heavy Cannon: damage +20%; Horse Artillery: damage +25%; Culverin: damage +25%. The game says: "Falconet, Heavy Cannon, Culverin, and Horse Artillery damage increased."
What is the tech ID of Gribeauval System?: HCXPGribeauvalSystem.

Falconet, Heavy Cannon, Culverin, and Horse Artillery damage increased.

What it does

Falconet: damage +25%
Heavy Cannon: damage +20%
Horse Artillery: damage +25%
Culverin: damage +25%

Cost: 1
Sent from: IV
Times it can be sent: 1
Game ID: HCXPGribeauvalSystem

In these decks

FrenchIV×1

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).