In return, the Vandals became Roman foederati.

作为回报，汪达尔人成为了罗马同盟者。

The Franks were Roman allies or foederati, so they ambushed and laid  waste to the Vandal army, killing their king, Godigisel.

法兰克人是罗马的盟友或同盟军，因此他们伏击并摧毁了汪达尔军队，杀死了他们的国王戈迪吉塞尔。