 Complete the following phrase:  Tảng believed that Thục undoubtedly considered that Thảos Catholic and family loyalties were stronger and more durable than his youthful enthusiasm for revolution. He felt that Thảo had tricked Thục into believing that he was no longer a communist, and that his inside knowledge would be useful to the Ngô family. Thảo started by training the Civil Guard. As a result of his familys Catholic connections, Thảo rose steadily in the ARVN, since Diệms regime had always promoted officers primarily on religious preference and loyalty. Nhu sent him to Malaysia to study counterinsurgency techniques, and upon his return, Thảo became a vital part of Nhus efforts to purge the army of disloyal officers. As Thảo kept a close watch on those who commanded troops, lest they use their personnel in a coup, the leading officers were keen to maintain a good relationship with him, which increased his effectiveness as a spy. Thảo rose even further when the troops he commanded helped put down the 