Enter the church, and go to the upper floor. Move towards the back of the 
church, and look for some wooden walkway planks. After crossing over the 
planks, look to the left to see some alcoves. The Kilroy is in the second 
alcove.
Get past the barricade, and complete the "Destroy The German Fuel Supply" 
objective. You will enter a garden area with some dug in Nazis and a machine 
gunner in a window on the top floor of a building. Immediately follow the path 
to the south. When the path turns west, you can find the Kilroy on the wall.
Move up the street from the first gun you destroyed as part of an objective. 
Find the building with green canopies on your right. On the left-hand side and 
almost directly opposite is a building with black and white striped canopies 
covering its windows. On the side of this building is a route leading west. Go 
around to the rear of the building, and jump over the wall. In the next garden 
is a Kilroy next to a Lager Bier poster.