Nighthawk imagined that a speck of dust would be treated as an enemy invasion.
But the city was not new, simply well maintained, even in the face of an enemy invasion.
Only when completely cut off from their road network (e.g. by enemy invasion) do workers wander aimlessly around.
The ending is twice as long and reveals the mystery behind the enemy invasion.
They were over farm country that looked completely untouched by the enemy invasion.
It was particularly important as the village lives were frequently interrupted by wild beasts and enemy invasions.
When he falls asleep, his troops are gone and he is left alone to defend the incoming enemy invasion.
Yesterday and today I've been dealing with the probability of an enemy invasion.
I lost my wife in an enemy invasion, Major.
The Russian government took all measures to repel the enemy invasion.