Possible Clues:

• Energetic escape across English border
• Violent tough guys kept in check
• Forceful macho types welcomed by doctor
• Showing strong feeling, intense in speech
• Forceful macho types should be kept in check
• Strong old GI: he joins soldiers in captivity
• Zealously earnest
• Even the tail-end of storm at sea's intense
• Furious body-builders perhaps kept in check
• Forceful archdeacon takes time crossing eastern border