A military officer who is specialized in gunnery operations.

तोपखाना अधिकारी

English Usage: The gunnery officer was responsible for training the crew on the new artillery system.

Hindi Usage: तोपखाना अधिकारी नए तोपखाने प्रणाली पर क्रू को प्रशिक्षित करने के लिए जिम्मेदार था।