the Army component commander and be made Commanding General, USARV; that the incumbent commanding general of the U.S. Army Support Command be redesignated Deputy Commanding General, USARV; and that all Army units deployed to South Vietnam be assigned to the USARV headquarters. Westmoreland recommended the establishment of several Army corps level headquarters in South Vietnam which, under his operational control, would conduct U.S. combat operations in their respective tactical zones. Westmoreland's proposals were approved by Waters and the Department of the Army. On 20 July 1965 a letter of instruction from U.S. Army, Pacific, headquarters spelled out the new command relationship. The appointment of Westmoreland as USARV's commanding general was a step away from the creation of a true Army component command. Although the MACV commander had been the Army component commander since August 1963, the senior Army headquarters in Vietnam had had its own commanding general. With the change of July 1965, both positions were occupied by the same individual, Westmoreland. Thus he was put in the position of having to serve two masters: the Commander in Chief, Pacific, and the Commander in Chief, U.S. Army, Pacific. Similarly, U.S. Army organizations in South Vietnam were responsible to the head of MACV for combat operations and to the commander in chief of U.S. Army, Pacific, for Army matters. The overlapping chains of command resulted in duplication and confusion within the MACV-USARV structure. Function In May 1966 Westmoreland asked Lieutenant General Jean E. Engler, Deputy Commanding General, USARV, to study whether USARV headquarters should assume the Army's logistical advisory functions, which at the time were being performed by MACV's J-4 section, the Logistics Directorate. After completion of his survey, Engler made several observations and recommendations. The entire Army military assistance and advisory effort should, he contended, be the exclusive function of USARV, freeing MACV to concentrate on the control of its components. Engler concluded that MACV was no longer operating as a military assistance command in the true sense of the term, since U.S. tactical forces had been so greatly increased and their mission expanded. Engler maintained that logistics should not be separated from operations and advisory activities, and therefore these functions should be performed by USARV, in an expanded role as a full-fledged Army component. As a result of Engler's appraisal, logistic advisory functions were transferred to USARV headquarters, but the broader question of USARV's status was not resolved. Lieutenant