English language 6 Grammar 5 History 4 Leadership 4 Assassination 3 Fiction 3 Interpersonal relations 3 Military policy 3 Report writing 3 Rhetoric 3 Strategy 3 World War, 1939-1945 3 Algebra 2 Armed forces 2 Biography 2 Campaigns 2 Congresses 2 Do-it-yourself work 2 Generals 2 Handbooks, manuals, etc 2 Industrial management 2 Kennedy, John F. (John Fitzgerald)1917-1963 2 Man-woman relationships 2 National security 2 Organizational behavior 2 Social conditions 2 Special forces (Military science) 2 Stress (psychology) 2 Accounting 1 Adjustment(Psychology) 1