"Command & Conquer: Red Alert is a series of real time strategy video games set within the Command & Conquer universe. The series is well known for having some of the most quirky and outlandish units in the genre.
The Red Alert series takes place in an alternate timeline, created when Albert Einstein travels back to the past and eliminates Adolf Hitler in an attempt to prevent World War II from taking place. This plan indirectly backfires and results in an unchecked Soviet invasion of Europe by Joseph Stalin in the 1950s. The Stalin-led invasion of Europe serves as the backdrop for the first Command & Conquer: Red Alert game. Two expansion packs for Red Alert were released: Counterstrike and The Aftermath. New units, missions, multiplayer maps and music tracks were included in these expansions."