What do you do to give your generals good traits?

[Durallan]

To get good trait for my generals, I send them on crusades, fight in hard battles and try to do as many epic battles as possible with heirs and favoured family members, otherwise I don't really bother.

Guide to Getting a Great General:

- Good Breeding. (having good Kings (highest possible command piety and chivalry or dread) and high as possible charm wives)
- As soon as he comes of age, send him on a rather challenging battle to make a man of him, if he survives, will give him a good command boost.
- Send him on a crusade and make sure he is the one that finishes it!
- Now you have a very decent general, send him on some rather tough assignments but make sure he has kids of his own.
- When next son comes of age, start the process all over again.

This is all I've really done and in the later part of a game I've gotten great results with this.

The best trait you can get for command from come of age, is Born Conqueror with +4 command.