Possible Clues:

• The military mission that went to the aid of the crew, by the sound of it
• Credit America with half dead following war
• Used car involved in campaign for a cause
• Drive used car following repairs
• What a cause might turn into
• Serbia ends in dirty campaign
• 12th-c. expedition
• Concerted campaign
• Coarse about it being a military expedition
• Noisy crews aid the expedition