Meanwhile , spurred Causation by their experiences of the Napoleonic Wars Attack , and realising Coming_to_believe many of the harsh indignities Change_sentiment through which the peasant soldiers were forced Causation , Decembrist officers and sympathisers displayed their contempt for the `` ancien régime '' by rejecting Response court lifestyle , wearing Wearing their cavalry swords at balls ( indicating Causation their unwillingness to dance Body_movement ) , and committing Commitment themselves to academic study .