From giving him the necessary means to threaten Italy with invasion, his ability to invade and secure Sicily on two occasions and from whence he accompanied Anthemius with an army from the East as well as forces of his own to install Anthemius as Emperor.
He was able to equip him with the necessary tools to threaten Italy with a military campaign, and subsequently, he was successful in invading and securing Sicily on two separate occasions. He also accompanied Anthemius on an expedition from the East, bringing along his own forces, to install Anthemius as Emperor.