challenge: What was the composition of the XII (1st Royal Saxon) Corps after mobilization on 2 August 1914?
  
  A. 20 infantry battalions, 6 machine gun companies, 12 cavalry squadrons, 20 field artillery batteries
  B. 30 infantry battalions, 12 machine gun companies, 10 cavalry squadrons, 30 field artillery batteries
  C. 25 infantry battalions, 9 machine gun companies, 8 cavalry squadrons, 24 field artillery batteries
  D. 15 infantry battalions, 3 machine gun companies, 5 cavalry squadrons, 15 field artillery batteries
  Answer: 