In this paper, we proposed the modified method of Metcalfe's law that is "Modfied law" in evaluating the network power for the measurement of combat effectiveness in C4I system. It is applied to JFOS-K(Joint Fire Operating System-Korea) C4I system that can connect KJCCS(Korea Joint Command & Control System) of Korea armed forces with JADOCS(Joint Automated Deep Operations Coordination System) of U.S. armed forces and achieve sensor to shooter system in real time in JCS(Joint Chiefs of Staff) level. The result of combat effectiveness using Modified law is compared to the one by C2 theory and found that both is similar. This study is

1. 서 론
 2. C4I 체계 개념 및 기존연구 고찰
  2.1 C4I 체계 개념
  2.2 기존연구 고찰
 3. C4I 체계 전투효과 평가 방법
  3.1 C2 이론
  3.2 고전 역학이론 적용 방법 Ⅰ
  3.3 고전 역학이론 적용 방법 Ⅱ
 4. C4I 체계 전투력 상승효과 평가
  4.1 JFOS-K 개요
  4.2 전투력 상승효과 측정 방법
  4.3 시나리오
   4.3.1 가정사항
   4.3.2 상황설정
   4.3.3 전투자산
  4.4 전투력 상승효과 평가
   4.4.1 네트워크 파워(M)
   4.4.2 속도(v)
   4.4.3 정보의 정확도(I)
   4.4.4 지휘통제시간(T)
  4.5 결과 분석 및 검증
   4.5.1 결과 분석
   4.5.2 전투력 상승효과 결과 검증
    4.5.2.1 C2 이론 적용을 통한 검증
    4.5.2.2 기존 연구결과와 비교 분석
  4.6 운용 노드수에 대한 민감도 분석
 5. 결론 및 향후 연구방향
 참 고 문 헌

• 정환식(국방대학교 운영분석과)
• 이재영(국방대학교 운영분석과)
• 김용흡(대한민국 육군)