Absolutely stupid ''defence'' of Winterfell.
Enemy: A ceaseless and colossal tidal wave of undead, almost unstoppable beings. No pity, mercy and very quick moving.
Strengths: Sheer massive numbers, speed, regeneration.
Weakness: Fire, stupidity and decapitation.
Suggestions:- Use the enemy's huge numbers against them.
- Put all of your army, and famed warriors, INSIDE the high castle walls, bedecked with umpteen steel barbs, flames and spikes. Fire naptha from ballistas and trebuchets from inside the courtyard, with squadrons of archers etc shooting concentrated fire from along the wall tops and courtyard.
- Above should be both dragons, scouting for the Night king and laying swathes of fire upon his army.
- For hundreds of metres in front of the castle dig a massive series of adjacent, deep lines of pits (hidden behind run-ups and sheer drops) with false runways, with barbed spikes and fire.
- Keep your elite Dothraki cavalry around either side of the castle ready to charge later on if/when needed
What DID happen:
- 90% of the army stand overexposed outside of the impregnable stone walls
- Cavalry charged blindly and illogically against a limitless enemy at the start, not during later stages as designed.
- No trebuchets or castle defences deployed.
- about one or two firepits, not very deep, which almost trapped the allies.