 Such helmets were used for hippika gymnasia , cavalry tournaments that were performed in front of emperors and senior commanders . Horses and riders wore lavishly decorated clothes , armour and plumes while performing feats of horsemanship and re @-@ enacting historical and legendary battles , such as the wars of the Greeks and Trojans . According to the Roman writer Arrian : 
 Such helmets <a href='uninflect' title='1'><mark>were</mark></a> used for hippika gymnasia , cavalry tournaments <a href='null_relcl' title='2'><mark>that</mark></a><a href='uninflect' title='3'><mark>were</mark></a> performed in front of emperors and senior commanders . Horses and riders wore lavishly decorated clothes , armour and plumes while performing feats of horsemanship and re @-@ enacting historical and legendary battles , such as the wars of the Greeks and Trojans . According to the Roman writer Arrian : 
Such helmets was used fir hippika gymnasia , cavalry tournaments was performed in front of emperors and senior commanders . Horses and riders wore lavishly decorated clothes , armour and plumes while performing feats of horsemanship and re @-@ enacting historical and legendary battles , such as da wars of tdaGreeks and Trojans . According to the Roman writer Arrian :