Some historians write that World War I (the Great War) was avoidable. What institutions and ideas developed after 1919 to prevent a recurrence? Why did they fail by 1939?
How did World War I change the face of modern warfare? Did the warring parties violate or ignore understandings about tactics and weapons? Were any international agreements violated or ignored?
International agreements have a mixed record of success in terms of limiting or preventing dangerous behavior by individual nations. How can this be improved or changed?

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.