Warriors were sometimes rallied into battle by blowing horns and warpipes. According to Gerald de Barri (in the 12th century), they did not wear armour, as they deemed it burdensome to wear and "brave and honourable" to fight without it. Instead, most ordinary soldiers fought semi-naked and carried only their weapons and a small round shield—Spenser wrote that these shields were covered with leather and painted in bright colours. Kings and chiefs sometimes went into battle wearing helmets adorned with eagle feathers. For ordinary soldiers, their thick hair often served as a helmet, but they sometimes wore simple helmets made from animal hides.