"Wars are classified according to the point of view from which they are examined or discussed. They are classified according to their causes into wars of opinion, religious wars, wars of independence, of conquest, or subjugation. In a military sense they are offensive, or defensive. In a political sense they are classified into external and internal wars. Internal wars are further subdivided into, 1st, Civil Wars, in which the belligerent parties are distributed over a large part of the territory of a state, the object being to secure a change of government or laws, but not at the expense of national unity; 2nd, Rebellions or Insurrections, in which a portion of the population of a state rises against the central government, sometimes with the design of securing a separation from it, sometimes with a view to resist the execution of harsh or oppressive laws, or measures of administration."1