We know because Operation Market-Garden (the airborne invasion of Holland in September 1944) was a failure, and Eisenhower did accept the blame without any excuses.
It will require a departure from the walled-garden mentality in which the operation of a static Web site or a network of disparate branded blogs has been the status quo.
Ryl Nowell's garden, symbolising Anglo-French co-operation, features raised squares of mirror glass, a path of see-through mesh and a glass bridge over a strip of water representing the English Channel.