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Selected Letters from the Great War
a - first person and about how everything is ready and perfect for the war to begin
b - first person and about war struggle and war badness
 On War
first person (we)
examines  philosophy of war through a deep analysis of historical campaigns, particularly those of Napoleon and Frederick the Great;
Flame and Gas in Modern Warfare,
by Major S.M.J. Auld, MC (1918)
third person
uses of flamethrowers and chemical weapons during ww1
the fourteen points
Wilson's vision for a stable, long-lasting peace in Europe and the rest of the world
3rd person
Peace Treaty of Versailles (1919)
third person
Germany has to take responsibility for the war
germany has to pay reparations
Mein Kampf (My Struggle)
first person
finding out Germany was going to lose the war
says in vain a lot