Complex sentence: The W54 style warhead was known to be used on the M-388 Davy Crockett, a tactical nuclear recoilless rifle projectile that was deployed by the United States during the Cold War.
Split into simpler sentences: The W54 style warhead was known to be used on the M-388 Davy Crockett (nuclear device). A tactical nuclear recoilless rifle projectile that was deployed by the United States during the Cold War.