During the attack on West Harbour, I gather five militiamen and report to Georg at the wheat field. He says the correct response that should lead to incoming waves of enemies: but then nothing happens. The enemy does not attack., so the game cannot progress.
Is there something else I must do in addition to collecting the militia and speaking to Georg?
If it's a software glitch, what is the cure?

So it's just a matter of finding the sweet spot?
Okay, I'll try that. Thanks.