Labels:book | bulletin board | jotter OCR: CRENELLATIONS Castle walls and towers all had jagged top formed by sections of high and low stonework. This form of stonework was called crenellation, and it had an important military purpose The high sections of stone, called mer rlons, provided protection from arrows for soldiers defending the castle They their weapons either through the gaps or crenels though the arrow slits or embrasur es merlons fired
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