Leader Traits
First up, Tokugawa is
Aggressive and
Organised.
Aggressive:
- Free Combat I promotion of melee and gunpowder units.
- Double production speed of Barracks and Drydock.
The aggressive trait is (IMHO) great, as the combat 1 promotion unlocks other useful promotions, and you get a second promotion in the early game with just a barracks. Using this to give cover or shock to axemen or swordsmen can give you very powerful early units - especially with cover against AI's who love to use lots of archers for city defence! Considering that the barracks are also cheaper, taking early advantage of this trait is a warmongers' dream.
Organised:
- Civic upkeep reduced 50 percent.
- Double production speed of Lighthouse and Courthouse.
Maybe one of the weaker traits, especially in the early game. The early civics are fairly cheap, so the reduced upkeep doesn't provide much benefit. In the later game, cash-flow doesn't tend to be as big of an issue as in the early game, so again the higher civics can be supported with not too many problems.
Construction of lighthouses can be useful though - they provided one extra food / water tile, and helps grow a coastal city large enough that it can provide a good commercial boost to your civ. They require research of sailing to build them.
Courthouses are useful in reducing maintenance costs. To build them, you have to research Code Of Laws - this can be a good tech to get after early, especially if you have missed-out on one of the early religions (first to Code Of Laws founds Confucianism). In addition, to build the Forbidden Palace, you need to build 5 courthouses (and have at least 8 cities).
Unique Unit
You unique unit is the
Samurai; a replacement for the maceman. It has a strength of 8 and costs 87 hammers (in the epic game), which is actually exactly the same as the maceman. Also like the maceman, it gets +50% vs melee units, and becomes available once you have discovered machinery and civil service. A slight difference from the maceman is that it requires iron to build (whereas the maceman can make use of copper or iron).
The real benefit of the samurai is the two first strikes - this is a great advantage, and with suitable promotions, it can be a very powerful unit. Remember: As a melee unit, it gets the initial combat I promotion.
Starting Technologies:
- Fishing
- The Wheel.
Fishing and the wheel means that Japan can start researching pottery right away. The top-half of the tech tree is immediately opened-up, making a quick run to writing / alphabet viable. The downside is that this ignores the bottom techs, and the early religions. Still, there are many, many tech paths open to you!