Why did military officers gain influence in Egypt during Thutmose III's reign?

Military officers gained significant influence during the reign of Thutmose III primarily because the extensive military campaigns required to build and maintain the Egyptian empire necessitated a large, professional military establishment.1

As the king grew up, he was surrounded by military companions with whom he shared close personal connections. These relationships enabled these officers to participate increasingly in the government. Furthermore, the administration of the state shifted away from traditional bureaucratic families; instead, the king began appointing capable individuals—often military officers who had served him on his campaigns—to high civil and religious positions. This trend toward royal appointment of military personnel eventually led to a situation where their influence began to outweigh that of the traditional bureaucracy.12