The story is dominated by the personality of Forrest Mars, whose mantra was "I'm not a candy maker. I'm empire minded." His ambition led him to split from his father, learn chocolate making from the ground up as a factory worker in Switzerland, and build a massive UK business before eventually taking control of the entire Mars enterprise.
Mars implemented a rigorous management system centered on the "Five Principles" (Quality, Responsibility, Mutuality, Efficiency, Freedom) and a key financial metric: Return on Total Assets (ROTA). This focus on efficiency, coupled with high employee compensation, resulted in productivity per employee that was nearly double that of its main rival, Hershey.
Mars aggressively leveraged advertising to build its brands, most notably with M&M's iconic slogan, "The milk chocolate that melts in your mouth, not in your hand." This stood in stark contrast to Hershey's 70-year policy of no advertising, allowing Mars to capture consumer mindshare and capitalize on the rise of television and impulse purchases in supermarkets.
Forrest Mars's vision extended far beyond confectionery. He strategically diversified into pet food in the 1930s and later into food staples with Uncle Ben's Rice, recognizing opportunities in adjacent, high-growth markets. This was complemented by a drive for vertical integration, such as learning to produce his own chocolate to control quality and cost, breaking his dependence on suppliers like Hershey and Cadbury.
Keep pulling the thread on Ben's Original Rice.