Question: In which military branch did the president during the purchase of the state where the McDonald's fish fillet comes from serve?

<P0-S0> As of December 2014, the Filet - O - Fish contains a battered, fried fish fillet made from Alaska pollock. <P0-S1> In the Republic of Ireland either hoki or Alaska pollock may be served. <P0-S2> In New Zealand and the United Kingdom Filet - O - Fish contains hoki instead of Alaska pollock. <P0-S3> McDonald's Canada, United States, United Kingdom, Australia, New Zealand, Portugal, Czech Republic, The Netherlands and Hong Kong use a half slice of cheese in each Filet - O - Fish sandwich. <SEP> <P1-S0> The Alaska Purchase (Russian: Продажа Аляски, tr. <P1-S1> Prodazha Alyaski) was the United States' acquisition of Alaska from the Russian Empire on March 30, 1867, by a treaty ratified by the United States Senate, and signed by president Andrew Johnson. <SEP> <P2-S0> Lafayette Curry Baker (October 13, 1826 – July 3, 1868) was a United States investigator and spy, serving the Union Army, during the American Civil War and under Presidents Abraham Lincoln and Andrew Johnson. <SEP> <P3-S0> in july 2011, mcdonald's announced plans to make happy meals healthier, including the addition of apples. <P3-S1> the redesigned meals will contain a smaller portion (1.1 ounces) of fries, along with the apples. <P3-S2> on february 4, 2013, mcdonald's announced that fish mcbites, fried alaskan pollock, the same fish used in filet - o - fish, would be added as an entree, which would run until march, intended to coincide with lent. <SEP> <P4-S0> the central intelligence agency (cia) is a quasi-independent agency of the united states government. <P4-S1> it appears to have multiple leadership. <P4-S2> on the one hand its director is appointed by the president. <P4-S3> it plays a significant role in providing the president with intelligence. <P4-S4> on the other hand, congress oversees its operations through a committee. <P4-S5> the cia was first formed under the national security act of 1947 from the army's office of strategic services (oss), which furnished both military intelligence and clandestine military operations to the army during the crisis of world war ii. <P4-S6> many revisions and redefinitions have taken place since then. <P4-S7> although the name of the cia reflects the original advised intent of presidents franklin d. roosevelt and harry s. truman, the government's needs for strategic services have frustrated that intent from the beginning. <P4-S8> the press received by the agency in countless articles, novels and other media have tended to create various popular myths; for example, that this agency replaced any intelligence effort other than that of the oss, or that it contains the central intelligence capability of the united states. <P4-S9> strategic services are officially provided by some 17 agencies called the intelligence community. <P4-S10> army intelligence did not come to an end; in fact, all the branches of the armed forces retained their intelligence services. <P4-S11> this community is currently under the leadership (in addition to all its other leadership) of the office of the director of national intelligence.