What does National Cavalry do in AoE3?

Vistula Uhlan: range (Melee) +1, range (Melee (defend)) +1, range (Trample) +1. The game says: "Grants Vistula Uhlans more attack range and a charged lance attack."

Home City card

National Cavalry

National Cavalry (tech ID DEHCREVNationalCavalry) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Industrial Age. Effect: Vistula Uhlan: range (Melee) +1, range (Melee (defend)) +1, range (Trample) +1.

Quick answers (3)

Which civilizations have the National Cavalry card?: Poles.
What does National Cavalry do in AoE3?: Vistula Uhlan: range (Melee) +1, range (Melee (defend)) +1, range (Trample) +1. The game says: "Grants Vistula Uhlans more attack range and a charged lance attack."
What is the tech ID of National Cavalry?: DEHCREVNationalCavalry.

Grants Vistula Uhlans more attack range and a charged lance attack.

What it does

Vistula Uhlan: range (Melee) +1, range (Melee (defend)) +1, range (Trample) +1

1 further effect (interface, visuals or AI) not listed.

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

In these decks

PolesIV×1

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