I-adjective (keiyoushi)
brilliant; glorious; glittering; bright; splendid (e.g. achievement, success); promising (e.g. future)
その軍団は戦闘中多くの輝かしい作戦に従事した。The army was involved in a number of brilliant actions during the battle.
Also written 耀かしい【かがやかしい】、赫かしい【かがやかしい】