Chain Crosswords Short Holidays Hard — Set 4

Hard 15×15 Set 4
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10
Across
  1. 1. Fortress protecting a city
  2. 3. Medieval land-for-service system
  3. 8. Person who serves in an army
  4. 9. A word related to history
  5. 10. A word related to history
Down
  1. 2. A word related to history
  2. 4. Succession of rulers from one family
  3. 5. Short Roman military sword
  4. 6. Norse seafaring warrior
  5. 7. A word related to history