Complex sentence: A smart action ensued in full view of the spectators lining the cliffs and, although the "Embuscade" (32 guns) stood out to assist them, the enemy retired under the protection of the shore batteries after an hour.
Split into simpler sentences: A smart action ensued in full view of the spectators lining the cliffs. Although the "Embuscade" (32 guns) stood out to assist them, the enemy retired under the protection of the shore batteries after an hour.