Which country employed combined arms operations as a warfare strategy in World War II?

Germany is recognized for employing combined arms operations as a key strategy during World War II. This military approach involved the coordinated use of different branches of the armed forces, such as infantry, armor, and air support, to achieve greater effectiveness on the battlefield. The German military effectively integrated these forces in their Blitzkrieg tactics, which emphasized speed and surprise, allowing them to overwhelm opponents quickly.

This method was particularly evident in their early campaigns in Western Europe, where they combined fast-moving armored units with close air support from the Luftwaffe, enabling them to breach enemy lines and encircle forces effectively. The combination of mechanized infantry and tanks, along with coordinated aerial operations, showcased a new level of operational synergy that disrupted traditional defensive strategies.

While other countries also made use of combined arms to some extent, Germany's innovative application of this strategy led to significant early successes in the war, setting a benchmark for modern combined arms tactics.