What is the impact of using illumination rounds?

Using illumination rounds serves a specific purpose during military operations, particularly in nighttime situations. The primary objective of these rounds is to illuminate the battlefield, allowing troops to see the area clearly in low-light conditions. This increased visibility can enhance situational awareness, improve targeting accuracy, and facilitate troop movements, as soldiers can better identify threats and navigate obstacles.

While smoke screens are used to obscure vision and protect troop movements, and air support can provide a range of benefits like attacking enemy positions or providing reconnaissance, illumination rounds do not serve these purposes. Additionally, while suppressing enemy fire is crucial during engagements, illumination rounds primarily focus on visibility rather than directly affecting enemy capabilities. Thus, the function of illumination rounds emphasizes lighting up the battlefield effectively, especially during night operations, making it the correct answer.