The "North Army" typically refers to military forces operating in northern regions during various historical conflicts. This term can apply to different armies in different contexts, such as the Union Army during the American Civil War or the Northern Army in the context of the Russian Civil War. In modern contexts, the term may also refer to specific military units or operations in northern territories. These forces often focus on strategic defense, territorial control, and engagement in regional conflicts, adapting to the unique challenges posed by northern climates and geography.