The symbol is a combination of the semaphore signals for the letters "N" and "D," standing for "nuclear disarmament".[49] In semaphore the letter "N" is formed by a person holding two flags in an inverted "V," and the letter "D" is formed by holding one flag pointed straight up and the other pointed straight down. Superimposing these two signs forms the shape of the centre of the peace symbol.[49][55][56] Holtom later wrote to Hugh Brock, editor of Peace News, explaining the genesis of his idea in greater depth: "I was in despair. Deep despair. I drew myself: the representative of an individual in despair, with hands palm outstretched outwards and downwards in the manner of Goya's peasant before the firing squad. I formalised the drawing into a line and put a circle round it."[56] Ken Kolsbun, a correspondent of Holtom's, says that the designer came to regret the symbolism of despair, as he felt that peace was something to be celebrated and wanted the symbol to be inverted.[57] Eric Austen is said to have "discovered that the 'gesture of despair' motif had long been associated with 'the death of man', and the circle with 'the unborn child',"[53] possibly referring to images in Rudolf Koch's The Book of Signs (Das Zeichenbuch, 1923), an English edition of which had been published in 1955.[58] Some time later, Peggy Duff, general secretary of CND between 1958 and 1967, repeated this interpretation in an interview with a US newspaper, saying that the inside of the symbol was a runic symbol for death of man and the circle the symbol for the unborn child.[59]
The symbol became the badge of CND and wearing it became a sign of support for the campaign for unilateral nuclear disarmament by Britain. An account of CND's early history described it as "a visual adhesive to bind the [Aldermaston] March and later the whole Campaign together ... probably the most powerful, memorable and adaptable image ever designed for a secular cause."[53]
Embodying the national debate over U.S. involvement in the Vietnam War, a U.S. soldier in Vietnam wearing amulets, one depicting the peace symbol and another the Buddhist swastika.
In 1970, two US private companies tried to register the peace symbol as a trade mark: The Intercontinental Shoe Corporation of New York and Luv, Inc. of Miami. Commissioner of Patents William E. Schuyler Jr, said that the symbol "could not properly function as a trade mark subject to registration by the Patent Office".[63]
Ken Kolsbun in his "biography" of the peace symbol wrote that, "In an attempt to discredit the burgeoning anti-war movement, the John Birch Society published an attack on the peace symbol in its June 1970 issue of American Opinion", calling the symbol "a manifestation of a witch's foot or crow's foot", supposedly icons of the devil in the Middle Ages.[61] A national Republican newsletter was reported to have "noted an ominous similarity to a symbol used by the Nazis in World War II".[61][64]