It was a test to see if the spies were removed automatically during an invasion.  

My initial intention was not to destroy this building, but the legions have destroyed my plan because they do as they please and without being able to direct them.
So we must remember to remove all of our spies before launching an invasion.
My point is that it is not very convenient to have to do this every time. It would be much more practical if the spies were removed automatically.

"J'critique pas le côté farce, mais pour le fair-play y'aurait quand même à dire."  
Ne nous fâchons pas (1966).

"I'm not criticizing the joke side, but for fair play there would still be something to say."
Let's not get angry (1966).