Possible Clues:

• Protester more unprepared about South America
• British cruiser tank of the Second World War
• Richard I badly scarred, Anjou finally claimed
• Old warrior caused upset with Roger losing heart
• Seen in early expedition - one leaving ship without notice
• One campaigning vigorously
• The old soldier is more earthy about sex-appeal
• That's a cross sort of fighter
• Religious fighter is more natural outside religious army
• RA cursed (anag) - one fighting for a cause