Title: Pledge of Allegiance
Content:  those spiritual weapons which forever will be our country's most powerful resource, in peace or in war." The phrase "under God" was incorporated into the Pledge of Allegiance on June 14, 1954, by a Joint Resolution of Congress amending § 4 of the Flag Code enacted in 1942. On October 6, 1954, the National Executive Committee of the American Legion adopted a resolution, first approved by the Illinois American Legion Convention in August 1954, which formally recognized the Knights of Columbus for having initiated and brought forward the amendment to the Pledge of Allegiance. Even though the movement behind inserting "under God" 
Title: Criticism of the Pledge of Allegiance
Content:  The words "under God" were added to the Pledge on June 14, 1954 when then U.S. President Dwight D. Eisenhower signed a bill into law. At the time, Eisenhower stated that "From this day forward, the millions of our school children will daily proclaim in every city and town, every village and rural schoolhouse, the dedication of our Nation and our people to the Almighty." The matter of the Pledge's constitutionality simmered for decades below the public eye. In 1992, the Chicago-based Seventh Circuit Court of Appeals decided the first challenge to the constitutionality of the words "under God", ruling in Sherman v. Community Consolidated School 
Title: Pledge of Allegiance
Content:  Louis Albert Bowman, an attorney from Illinois, was the first to suggest the addition of "under God" to the pledge. The National Society of the Daughters of the American Revolution gave him an Award of Merit as the originator of this idea. He spent his adult life in the Chicago area and was chaplain of the Illinois Society of the Sons of the American Revolution. At a meeting on February 12, 1948, he led the society in reciting the pledge with the two words "under God" added. He said that the words came from Lincoln's Gettysburg Address. Although not all manuscript versions 
Title: June 1954
Content: The words "under God" are added to the United States Pledge of Allegiance. 
Title: Pledge of Allegiance
Content:  Columbus, the world's largest Catholic fraternal service organization, also began including the words "under God" in the Pledge of Allegiance. In New York City, on April 30, 1951, the board of directors of the Knights of Columbus adopted a resolution to amend the text of their Pledge of Allegiance at the opening of each of the meetings of the 800 Fourth Degree Assemblies of the Knights of Columbus by addition of the words "under God" after the words "one nation." Over the next two years, the idea spread throughout Knights of Columbus organizations nationwide. On August 21, 1952, the Supreme Council of 
Title: Pledge of Allegiance
Content:  the Gettysburg Address contain the words "under God", all the reporters' transcripts of the speech as delivered do, as perhaps Lincoln may have deviated from his prepared text and inserted the phrase when he said "that the nation shall, under God, have a new birth of freedom." Bowman repeated his revised version of the Pledge at other meetings. During the Cold War era, many Americans wanted to distinguish the United States from the state atheism promoted by Marxist-Leninist countries, a view that led to support for the words "under God" to be added to the Pledge of Allegiance. In 1951, the Knights 
Title: Pledge of Allegiance
Content:   The Pledge of Allegiance of the United States is an expression of allegiance to the flag of the United States and the republic of the United States of America. Such a pledge was first composed, with a text different from the one used at present, by Captain George Thatcher Balch, a Union Army Officer during the Civil War and later a teacher of patriotism in New York City schools. The form of the pledge used today was largely devised by Francis Bellamy in 1892, and formally adopted by Congress as the pledge 50 years later, in 1942. The official name of The Pledge of Allegiance was adopted in 1945. The most recent alteration of its wording came on Flag Day (June 14) in 1954, when the words "under God" were added.
Title: Pledge of Allegiance
Content:  eventually a success. At the suggestion of a correspondent, Representative Louis C. Rabaut (D-Mich.), of Michigan sponsored a resolution to add the words "under God" to the Pledge in 1953. Before February 1954, no endeavor to get the pledge officially amended had succeeded. The final successful push came from George MacPherson Docherty. Some American presidents honored Lincoln's birthday by attending services at the church Lincoln attended, New York Avenue Presbyterian Church by sitting in Lincoln's pew on the Sunday nearest February 12. On February 7, 1954, with President Eisenhower sitting in Lincoln's pew, the church's pastor, George MacPherson Docherty, delivered a sermon 
Title: Criticism of the Pledge of Allegiance
Content:  21 that the use of the words "under God" in the Pledge did not violate the Establishment Clause. On June 26, 2002, in a case (Newdow v. United States Congress) brought by an atheist father objecting to the Pledge being taught in his daughter's school, the Ninth Circuit Court of Appeals in San Francisco ruled the addition of "under God" an unconstitutional endorsement of monotheism. Shortly after the ruling's release, Judge Alfred T. Goodwin, author of the opinion in the 2–1 ruling, signed an order staying its enforcement until the full Ninth Circuit court could decide whether to hear an appeal. The day after the 
Title: Pledge of Allegiance
Content:  also a form of speech in the context of the ritual of pledging allegiance. Another objection is that the people who are most likely to recite the Pledge every day, small children in schools, cannot really give their consent or even completely understand the Pledge they are making. Another criticism is the belief that a government requiring or promoting the phrase "under God" violates protections against the establishment of religion guaranteed in the Establishment Clause of the First Amendment. In 2004, linguist Geoffrey Nunberg said the original supporters of the addition thought that they were simply quoting Lincoln's Gettysburg Address, but to Lincoln and his contemporaries, "under God" meant "God willing", so they would have found its use in the Pledge of Allegiance grammatically incorrect and semantically odd.

Question: when were the words under god added to the pledge?
Answer: on Flag Day in 1954.
1954.
Flag Day in 1954.