Why was the Battle of Passchendaele a failure?

Related questions

1. Was gas used at Passchendaele?
2. Why was Ypres so important?
3. What happened in Ypres?
4. Is Ypres in France or Belgium?
5. Why was the Battle of Ypres so important?
6. Was Ypres in France?
7. What was the result of the battle of Ypres?
8. Why was the 2nd Battle of Ypres important?
9. What is Ypres famous for?
10. How many people died in the 3rd Battle of Ypres?

Tags

1. #would
2. #cripple
3. #destroy
4. #reach
5. #belgian
6. #following
7. #blockade
8. #there
9. #german
10. #coast
11. #submarine
12. #flanders
13. #bases
14. #effort
15. #wanted
16. #british
17. #battle
18. #passchendaele
19. #warning
20. #november
21. #offensive