Challenges to national defence in contemporary geopolitical situation

In this paper we present a structured framework for introducing quantum programming into defence-oriented education and we argue that early literacy in quantum technologies is essential for future military officers. Motivated by the rapid progress of quantum processors and the growing impact of quantum algorithms on cryptanalysis, optimisation, and data processing, we outline both the opportunities and security risks that quantum computing brings to national defence systems. The first part of paper provides a concise introduction to quantum computing fundamentals, including the nature of qubits, superposition and measurement, the action of key quantum gates, and the construction of multi-qubit states through tensor products. The second part demonstrates these principles through simple quantum circuits implemented in Python using Qiskit, illustrating phenomena such as the creation of a maximally entangled two-qubit state and an analogue of the Monty Hall paradox. By combining mathematical concepts with hands-on experimentation in a controlled simulation environment, the proposed teaching approach highlights the operational relevance of quantum thinking for cadets preparing for roles in cyber defence, signals and communications, electronic warfare, and intelligence analysis. The article concludes that integrating quantum programming into military education enhances technological preparedness and strengthens the ability of defence institutions to anticipate quantum-era challenges, including the transition to quantum-resistant cryptography and the incorporation of quantum technologies into multidomain operations.