What does Coldstream Guards do in AoE3?

Musketeer: damage +15%, hit points +15%; Grenadier: hit points +15%, damage +15%. The game says: "Musketeer and Grenadier attack and hitpoints increased."

Home City card

Coldstream Guards

Coldstream Guards (tech ID HCMusketeerGrenadierCombatBritish) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Fortress Age. Effect: Musketeer: damage +15%, hit points +15%; Grenadier: hit points +15%, damage +15%.

Quick answers (3)

Which civilizations have the Coldstream Guards card?: British.
What does Coldstream Guards do in AoE3?: Musketeer: damage +15%, hit points +15%; Grenadier: hit points +15%, damage +15%. The game says: "Musketeer and Grenadier attack and hitpoints increased."
What is the tech ID of Coldstream Guards?: HCMusketeerGrenadierCombatBritish.

Musketeer and Grenadier attack and hitpoints increased.

What it does

Musketeer: damage +15%, hit points +15%
Grenadier: hit points +15%, damage +15%

Cost: 1
Sent from: III
Times it can be sent: 1
Game ID: HCMusketeerGrenadierCombatBritish

In these decks

BritishIII×1

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