Combat Duration

"Infantry soldiers are most at risk for stress reactions during their initial forays into battle and following prolonged periods of combat duty. From World War II, it has been estimated that green troops are at their highest risk of breakdown during the first 5 to 21 days of combat and that veteran troops risk collapse sometime between 30 and 250 days of combat. The most frequently cited estimate of a soldier's emotional lifespan, calculated be Beebe and Appel*, is between 80 and 90 days of combat. Alternately, the British Army claimed its soldiers lasted considerably longer, largely because of a practice of withdrawing men from the line for rest. This is in contrast to U.S. forces, which committed men to the line almost perpetually."

*Beebe and Appel estimated that half of the combat infantrymen studied in the Mediterranean theater of operations broke down after 85-90 days of company casualty days of combat.

Soldiers all had different ways of showing stress, however, most responded well to a simple treatment of rest, food and relaxation for a period of 48 hours (induced sleep of 24 to 48 hours helped by a high percentage).

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Did the average Confederate soldier have as much or more combat time "company casualty days of combat" than did the Union? I think I read that Union troops were rotated from front line service on average from about 3 to 6 months. With the ability of Union troops to only have to serve on average just 90 to 180 days on the line and the disadvantaged average Confederate soldier never getting a break for the whole war, does this show just how determined Confederate were to last as long as they did?