HOW CAN INCEASE LOYALTY TOTAL WAR SHOGUN 2

There are several ways to increase a generals loyalty.

1. You can adopt him into your family.
2. You can have him marry your daughter.
3. If pat of your family You can make him your heir.
4. You can give him a commission.
5. Randomly gained traits can increase loyalty.
6. Random traits of his wife can increase loyalty.
7. Certain retainers increase loyalty.
8. Winning glorious victories can increase loyalty.
9. The skill Honourable which requires a 4 star general will raise loyalty.
10. Your Daimyo's Honor affects loyalty. (higher honor means more loyal generals)

That out of the way it is usually better to peacefully occupy than to loot. You may not get as much money up front but your Daimyo's Honor is not lowered (as is the case with looting) and you won't have to deal with as much unhappiness (which can often lead to peasant revolts).