OAKS wrote:But 'under God' was not originally in the Pledge of Allegiance. They added it in during the Cold War.
This is true.
In 1954, Congress after a campaign by the Knights of Columbus, added the words, 'under God,' to the Pledge. The Pledge was now both a patriotic oath and a public prayer.
http://history.vineyard.net/pledge.htm
Also, as an aside, the hand-over-the-heart salute during the Pledge changed around 1939-1940 due to the rise of Hitler and the Nazis. American's used to raise their right arms and turn their palms upwards, similar to the Nazi salute.
The Oxford English Dictionary (OED) supports Dr. Rex Curry's discovery that the Nazi salute originated in the United States. Dr. Curry showed that the USA's early pledge of allegiance to the flag (1892) used a straight-arm salute and it was the source of the salute of the monstrous National Socialist German Workers' Party (Nazis). The salute of German Socialists has sometimes been labeled an "ancient Roman salute." Dr. Curry helped to establish that it was not an ancient Roman salute, and that the "ancient Roman salute" is a modern myth that grew during and after the lives of Edward Bellamy (1850-1898) and Francis Bellamy (1855-1931).
http://rexcurry.net/book1a1contents-pledge.html