PSEB SS Defence Studies study materials
PSEB SS Defence Studies study resources

PSEB SS Defence Studies: Strategy, War and Modern Warfare

PSEB SS Defence Studies · Work through your exam, one topic at a time.

All guide sections

Strategy, War and Modern Warfare

Strategy, War and Modern Warfare tests the language of strategy, the principles of war, and the changing character of conflict. Expect definitional questions and short applications.

Strategy and the principles of war

  • Strategy relates military means to political ends. Tactics is the conduct of battles; operational art links tactics to campaign objectives; grand strategy coordinates all instruments of national power.
  • Commonly taught principles of war include selection and maintenance of the aim, concentration of force, economy of effort, offensive action, surprise, security, flexibility, cooperation, morale and administration.
  • Conventional warfare uses organised forces and regular weapons. Unconventional or irregular warfare uses guerrilla methods, proxies and subversion. Hybrid warfare blends military, cyber, informational and economic pressure below the threshold of open war; a grey-zone action is coercive but ambiguous.

Nuclear and modern domains

India's declared nuclear posture includes credible minimum deterrence, no first use, civilian control and massive retaliation. The NFU is stated with the caveat that India retains the option of nuclear retaliation against a major attack by biological or chemical weapons. Cyber, space and information are operational domains, not separate armed services.

Worked example

A unit moves at night along an unexpected route and attacks at dawn. The principle illustrated is surprise. If the examiner asks why economy of effort is not the answer: economy of effort means allocating only the resources needed to achieve the aim; the night move is about timing and concealment, not resource allocation. The reasoning must name the principle and match it to the action.

Traps

  • Calling any clever manoeuvre strategy when it is tactics.
  • Confusing surprise with deception, or flexibility with indecision.
  • Saying India's NFU means India will never use nuclear weapons first under any circumstances; the chemical and biological caveat matters.
  • Treating cyber warfare as a service rather than a domain.