reading comprehension

Here is a paragraph of Hannibal's speech:

Here, soldiers, where you have first met the enemy, you must conquer or die; and the same fortune which has imposed the necessity of fighting holds out to you, if victorious, rewards than which men are not wont to desire greater, even from the immortal gods. If we were only about to recover by our valor Sicily and Sardinia, wrested from our fathers, the recompense would be sufficiently ample; but whatever, acquired and amassed by so many triumphs, the Romans posses, all, with its masters themselves, will become yours. To gain this rich reward, hasten, then, and seize your arms, with the favor of the gods.



1. If "than" were not there, I would understand "which men are not wont to …. , even from the immortal gods" as a relative clause that modifies "rewards". With "than" being placed there, I am confused.



2. What does "but" mean? I thought "further" or a similar word would be a better choice. The recompense for recovering Sicily and Sardinia would be much, further more, … will become yours.



3. Does "with its masters themselves" refer to "all"? I don't know the relationship of "all" with the other phrases "whatever, acquired and amassed …"



Thanks for your help.