Related Clues:

• Long way to hoof it
• Trojan and Korean
• Go slow
• Trying trip
• Tough haul
• Tiring journey
• History class topics
• Some involve attrition
• Serious trip
• Major conflicts
• Footslog
• Trip with much hardship
• Military conflicts
• I and II, e.g., but not yet III and IV
• Wearying journey