What does Hand Infantry Combat do in AoE3?

Shotel Warrior: hit points +15%, damage +15%. The game says: "Shotel Warrior attack and hitpoints increased."

Home City card

Hand Infantry Combat

Hand Infantry Combat (tech ID DEHCHandInfantryCombatEthiopian) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Fortress Age. Effect: Shotel Warrior: hit points +15%, damage +15%.

Quick answers (3)

Which civilizations have the Hand Infantry Combat card?: Ethiopians.
What does Hand Infantry Combat do in AoE3?: Shotel Warrior: hit points +15%, damage +15%. The game says: "Shotel Warrior attack and hitpoints increased."
What is the tech ID of Hand Infantry Combat?: DEHCHandInfantryCombatEthiopian.

Shotel Warrior attack and hitpoints increased.

What it does

Shotel Warrior: hit points +15%, damage +15%

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

In these decks

EthiopiansIII×1

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