This is called "Discontinuation Syndrome." It is one side effect of taking antidepressants that will happen after stopping taking the drug. It is widely recognized and studied in psychology.
Answer:
brave and valorous
Explanation:
According to Steinbeck, the bod of a soldier doesn't let them remember the extreme of emotions experienced in a battle. Steinback explains that a soldier does not remember what happened at the war. More worse the battle and more do they forget about it. During a war, the soldiers lose the instinct for self-preservation and hence they perform heroic deeds in battle.
Hence, when soldiers do not talk about their battle experiences they are considered to be brave and valorous.