This guide was made for the purpose of producing something useful for those who wish to take the leap and play Gaul. Gaul is definitely the more "defensive" tribe of the three, and in the late game is an extremely powerful force to be reckoned with. That being said, their offensive capabilities are also very good, so no worries there if you wish to be a top player playing Gaul.
To become successful in Travian (or any game which takes some form of skill, whether it is reflexes, micro, or just plain time-spending on RPGs), you must invest time and be able to access your account multiple times during the day. You need activity to always be able to send out troops, talk to allies, level up fields/buildings, and see if you're being attacked. If you can't do it alone, get a friend to dual with you or get some active sitters. Raiding efficiently is also very important early on. Also, to be a "top player", you may want to invest some money into Gold. You can be fine without Gold too though!
Before you read the Gaul guide
Please, try to understand how this game works before you read the rest of the guide. Some aspects of the game will be confusing if you don't, and I am not going to go in detail of simple functions in Travian.
This thread here has the appropriate links to learn Travian for a beginner:
In summary, Gauls are masters of versatility. They can play any role and are very easy to adapt with. You are an invaluable asset to an alliance if you are a good Gaul. Their offense is amazing too as said previously. Swordsmen are up to par in relation to Axemen and Imperians, and Gaulish cavalry is amazing when it comes to damage. The Haeduans and Theutates Thunders (TTs) dish out damage easily, and TTs are the best raiding unit in the game next to Macemen. Of course, the point of their "lacking" in damage/defense (which isn't really true, Gauls are great at both) to other troops is their speed, which is an amazing trade-off. Speed is of utmost importance in times of need. Adapting as a Gaul is very easy to do. You can play defensively and offensively easily. In the Travian manual they state some of the features of playing Gaul, which I will go over in detail:Originally Posted by Travian Guide/Manual
Speed bonus: Yes, this is definitely true, and is very important in allied efforts. From the glorious Theutates Thunder (fastest unit in the game and arguably the best raider), to the reliant Druid Rider and Haeduan, Gallic cavalry is extremely valuable. Their two infantry units are normal speed for their Teuton and Roman counterparts. Also it should be noted that the Chief for Gauls moves 1 square faster than that of a Teuton's or Roman's for faster conquering, not that this should matter if you have to escort catapults to knock down the residence every time though.Originally Posted by Travian Guide/Manual
Moderate defense bonus from the Palisade: The Gallic Palisade is the middle ground of the Roman City Wall and the Teutonic Earth Wall. What I mean by this is that is is slightly less durable than the Teutonic wall, but still provides more of a defensive bonus (although less than that of a Roman's). It is a terrific wall when leveled up though. Values of each level and its defensive bonus can be seen at this thread:
Merchants can carry 750 resources (speed: 24 fields/hour): A good Gaul will learn to utilize the marketplace very early on in order to stop warehouse/granary overflow. Once you put your sales onto the market, they will be bought within minutes because of how quickly they can get to people around the map. They are the middle ground for capacity (Roman merchants carry 500, Teutons carry 1000), but are the fastest and are amazing because of this. Low on a resource? Trade off one of excess! It's that simple. And let's not forget feeding your expansion villages. Gauls will easily be able to transport resources from one village to another, providing continuous growth to new expansions.
Double cranny size (raid protection): Yes, this is a major turn-off for people attacking you early game simply because they will be wasting time getting zero bounty. Gallic crannies hold an astonishing 2000 resources. One level 10 cranny will ensure your safety of resources from Romans and Gauls. And still, 1333 resources protected from Teutons is fine early game since you can easily spend resources in efforts to prevent your enemies from getting anything.
Expensive siege weapons: By the time it comes for someone to get siege a mere 200 more of a resource per siege unit will not hurt too much. Trebuchets are excellent siege weapons regardless of their cost. They are also more powerful than Teutonic catapults anyways when it comes to demolishing buildings.
Cheap settlers: True, cheap settlers but when you look at the cost for Teutonic and Roman settlers you begin to wonder if this is a huge advantage or not. It is still expensive to get settlers early on! Besides, later in the game game you have to conquer to stay ahead of the pack, and Chiefs are ridiculous in cost and are the worst of the three races at lowering loyalty!