Understanding the support system of civil services aids in UPSC preparation by familiarizing aspirants with the structure and functionality of government institutions. Recognizing key departments, their roles, and operational dynamics prepares candidates for potential civil service roles. This knowledge enhances a candidate's perspective on public policies and governance, allowing them to contextualize their study materials effectively. It also elucidates the real-world implications of their examinations and serves as a foundation for informed discussions during interviews and essays.