Hisahide excelled at military strategy and fortification, and, as is apparent from the fact that in 1560, although he was still a vavasor, he (including his master's house) was appointed as a shobanshu (an official who accompanies the shogun) of the Muromachi bakufu (Japanese feudal government headed by a shogun); thus the Matsunaga clan had come a long way, thanks to Hisahide's excellent abilities.
軍事面や築城に優れ、1560年には陪臣の身でありながら主家同様に室町幕府の御相伴衆にまで列せられているのを見てもわかるように、松永氏は久秀の優秀な能力において成長を遂げていったのである。