Yes, yellow journalism was indeed used during World War 1, although its role was somewhat different compared to its prominence in earlier conflicts, such as the Spanish-American War.
Yellow journalism, characterized by sensationalism and exaggeration in reporting, was utilized by some newspapers to sway public opinion and encourage support for the war effort. Major newspapers often published dramatic stories to attract readership and promote patriotic fervor. This was particularly evident in the United States, where journalists sought to rally public support for the war against the Central Powers.
Furthermore, the government and military also engaged with the media to shape narratives that conveyed the heroism of the troops and the moral justification of the war. The Committee on Public Information (CPI), established by President Wilson, aimed to promote the war through various propaganda efforts, collaborating with newspapers and journalists. This blend of sensationalist journalism and propaganda contributed to the atmosphere of heightened nationalism.
In summary, while yellow journalism was less overtly prominent in World War 1 than in earlier conflicts, its legacy continued to influence media practices and governmental communications during the war, contributing to the overall narrative and public sentiment surrounding the conflict.