Yemen - A Shake-Up in the Military - NYTimes.com President Abdu Rabbu Mansour Hadi replaced nearly 20 top military officers on Friday, including a half brother of former President Ali Abdullah Saleh, but he left Mr. Saleh's son and other allies in place in important military units, the official Saba news agency reported. Mr. Hadi, who had served as Mr. Saleh's deputy, took power in February as part of a negotiated deal and was given the task of reunifying a military that had split during the yearlong uprising against Mr. Saleh. Mr. Hadi also replaced the governors of four provinces, including Taiz, where a Saleh ally led a crackdown against protesters, and Abyan, a militant stronghold.