Complex sentence: For the majority of the single-player campaign, the player controls Private Preston Marlowe, a member of a squad formerly representing a misfit company in a fictional United States Army battalion known as "Bad Company".
Split into simpler sentences: For the majority of the single-player campaign, the player controls Private Preston Marlowe. Marlowe is part of a squad formerly representing a misfit company in a fictional United States Army battalion known as "Bad Company".