Related Clues:

• Counterpart of a blitz
• Long-term assault
• W.W. II ordeal at Leningrad
• Alamo assault
• Extended attack
• Tactic with catapults
• Tactic in a war of attrition
• Long military engagement
• Attack on Troy, e.g
• Attack on the Alamo, e.g
• Retreating, for one European, is offensive in wartime
• Long, drawn-out fight
• Surrounded state
• Battle of Leningrad, e.g
• See GI dismantled blockade