At the head of a large army , he invaded Byzantine territory and sacked the fortress of Charsianon .
In 960 , Sayf al - Dawla tried to use the absence of Nikephoros Phokas with much of his army on his Cretan expedition , to re-establish his position .
At the head of a large army , Sayf al - Dawla invaded Byzantine territory and sacked the fortress of Charsianon .
In 960 , Sayf al - Dawla tried to use the absence of Nikephoros Phokas with much of his army on his Cretan expedition , to re-establish his position .