sentences:  Đính wrote to Diệm to complain that his units were being weakened by the policy of promoting officers for political reasons, despite having been a beneficiary himself of this non-merit-based policy.The reorganisation of the corps boundaries in December 1962 created a fourth region.The entire region surrounding the capital, Saigon, came under the purview of the III Corps, whereas the previous arrangement saw two corps controlling the regions to the north and south of the capital.