Charles Alan Pownall Charles Alan Pownall ( October 4 , 1887 – July 19 , 1975 ) was a Rear Admiral in the United States Navy and Governor of Guam ( May 30 , 1946 – September 27 , 1949 ) . He was the third military Governor and first naval Governor of Guam following the United States recapture of the island from the Japan ese . After conflict with the Guam Congress in 1948 , Pownall replaced many Congressmen with his own appointments , whom the Guamanians refused to recognize . The ensuing protest persuaded Truman to transfer control of the island away from the Navy . As a consequence , Charles Pownall was the last military governor of Guam . Military service . World War I . During World War I , then - Lieutenant Commander Pownall commanded the patrol vessel on convoy escort and antisubmarine operations in the Atlantic Ocean and European waters and was awarded the Navy Cross ; citation as follows : " " For distinguished service in the line of his profession as commanding officer of the USS " Vedette " , engaged in the important exacting and hazardous duty of transporting and escorting troops and supplies through waters infested with enemy submarine s and mines " . " Intewar . During the 1920s , Lieutenant Commander Pownall served as the first commanding officer of the destroyer . From 21 Dec . 1938 - 21 March 1941 he commanded the aircraft carrier . World War II . During World War II , Pownall commanded the fast aircraft carrier Task Group 50 . 1 in the Pacific Theater with the aircraft carrier as his flagship . He was in command of Task Force 15 when it raided the Japan ese positions on Tarawa in the Gilbert Islands on 18 September 1943 in preparation for the American invasion that would follow in November 1943 . After a perceived lack of aggressiveness at Minami Torishima , in the Gilbert Islands , and in the Marshall Islands , Admiral Chester W . Nimitz ordered him replaced by Marc Mitscher . Governorship . Pownall became military Governor of Guam on 30 May 1946 . He helped organize much of the island ' s basic government , and also approved the flag of Guam and the seal of Guam . Congressional walkout . In 1948 , Pownall , along with the United States Secretary of the Navy , gave the Guam Congress the power to create laws , pending the governor ' s approval . The Secretary of the Navy had the power to override a veto from either the Guam Congress or Governor Pownall . When the Guam Congress attempted to pass a law allowing them to subpoena American citizens , Pownall vetoed it . Despite this , while investigating suspected abuses involving Americans owning businesses through Guamanian frontmen , the Congress subpoenaed Abe Goldstein over his involvement in a local womens clothing store . Citing Pownalls veto , Goldstein refused to testify . The Guam Congress cited Goldstein for contempt and issued a warrant for his arrest , but were stopped by Pownall . When confronted , Pownall told Guam Speaker of the House Antonio Borja Won Pat to leave the matter to him . When Pat passed on the information to the House Assembly , they became angered at Pownall ' s comments . Stirred by Pownall and with media support , the House resolved to pass a bill requesting citizenship for Guamanians , and decided not to reassemble until the United States Congress had addressed the bill . On March 12 , Pownall called a special joint session of Congress , but most Congressional members refused to attend . Pownell dismissed all those Congressmen who chose to break the law by not attending , and appointed replacements . The dismissals caused outrage among Guamanians and twelve of Guams nineteen villages voted not to recognize the replacements . President Harry Truman ordered an investigation into the incident . Upon review , Truman ordered a transitional government created , and pressured Pownall to restore the Congressmen to their seats on 2 April 1948 . In September 1949 , administration of Guam was transferred to the United States Department of the Interior . Under the new government , the Governor of Guam was appointed by the President . Truman appointed Carlton S . Skinner as Guams first civilian Governor , replacing Pownall . Pownall was the last military governor of Guam .