Which significant change in advertising approach did major military equipment manufacturers widely adopt following the Vietnam War?

Throughout history, military equipment manufacturers have adapted their advertising strategies based on global conflicts and changing public sentiment. From World War era print campaigns to modern digital marketing, these companies have navigated complex ethical considerations while promoting products designed for national defense. This trivia explores a fascinating shift in corporate advertising history that occurred during a pivotal moment in 20th century military history.

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Shifting from emphasizing weapons' destructive capabilities to highlighting their defensive and peacekeeping applications
Abandoning all print advertising in favor of television commercials featuring celebrity military veterans
Rebranding their companies with bright, colorful logos to distance themselves from military associations
Focusing marketing exclusively on foreign governments while ceasing all domestic advertising campaigns