What does Frontier Defenses do in AoE3?

Ships 2 Outpost Wagon. The game says: "Ships 2 Outpost Wagons that can transform into Outposts."

Home City card

Frontier Defenses

Frontier Defenses (tech ID DEHCREVMXFrontierDefensesRepeat) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Fortress Age. Effect: Ships 2 Outpost Wagon.

Quick answers (3)

Which civilizations have the Frontier Defenses card?: Mexicans.
What does Frontier Defenses do in AoE3?: Ships 2 Outpost Wagon. The game says: "Ships 2 Outpost Wagons that can transform into Outposts."
What is the tech ID of Frontier Defenses?: DEHCREVMXFrontierDefensesRepeat.

Ships 2 Outpost Wagons that can transform into Outposts.

What it does

Ships 2 Outpost Wagon(unit)

What it hands over

2 × Outpost Wagonno train cost

Total ≈ 0 resources — units at their train cost, crates and animals at what they hold.

Cost: 1
Sent from: III
Times it can be sent: no limit
Game ID: DEHCREVMXFrontierDefensesRepeat

In these decks

MexicansIII∞

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