Square Leg was a 1980 British government home defence exercise that assessed the effects of a Soviet nuclear attack. It was assumed that 131 nuclear weapons would fall on Britain with a total yield of 205 megatons (69 ground burst; 62 air burst). This was felt to be a reasonably realistic scenario, although the report stated that a total strike in excess of 1,000 megatons would not be unexpected.
Mortality was estimated at 29 million (53% of the population); serious injuries at 7 million (12%); short-term survivors at 19 million (35%).
Square Leg was criticised for a number of reasons: the weapons used were exclusively in the high yield megaton range--with an average of 1.5 megatons per bomb--whereas a realistic attack based on known Soviet capabilities would have seen mixed weapons yields, including many missile-based warheads in the low hundred kiloton range; no targets in Inner London are attacked (for example Whitehall, the centre of British government); towns such as Eastbourne are hit for no obvious reason.
Operation Square Leg was one of the exercises used to estimate the destructiveness of a Soviet nuclear attack in the 1984 BBC production Threads.
Famous quotes containing the words square and/or leg:
“Rationalists, wearing square hats,
Think, in square rooms,
Looking at the floor,
Looking at the ceiling.
They confine themselves
To right-angled triangles.”
—Wallace Stevens (1879–1955)
“Entrance and exit wounds are silvered clean,
The track aches only when the rain reminds.
The one-legged man forgets his leg of wood.
The one-armed man his jointed wooden arm.
The blinded man sees with his ears and hands
As much or more than once with both his eyes.”
—Robert Graves (1895–1985)