An act of invading, especially by military forces
There remains to be noted the incursion of amateurs into the histrionic realm.
Save for an incursion by Goths in A.D.
The first incursion of the Northmen took place in A.D.
The inhabitants of the valley itself are now peaceful, but it is always subject to incursion from the Waziri tribes in the Tochi valley and the neighbouring hills.