In WW II, the British military paid friendly nationals in neutral Sweden, Switzerland, and elsewhere to subscribe to provincial German newspapers in order to garner intelligence about life in Germany. Among other things, printed death notices were used to estimate casualty numbers in German military units, since particular units tended to recruit from particular regions; casualty rates were a means to assess the degree of success of Nazi military campaigns those units were involved in.
Let us hope now that Britain’s enemies are not reading provincial newspapers such as The Wiltshire Times (14 June 2011):
It is hard to believe that the central communications hub for the entire British Army sits unassumingly on the outskirts of the quiet Wiltshire market town of Corsham.
. . .
The centre, at Westwells Road, in Neston, is home to GOSCC – the Global Operations Security Control Centre – a top secret centre which houses up to 600 specialists working behind the scenes to make huge military operations such as those in Libya, Afghanistan and Iraq a reality.”
I guess not revealing the street number keeps the location of the top-secret centre safe.