military expert; person well-versed in military affairs
Refers to someone with deep knowledge of military matters, strategy, or history. The suffix 通 (つう) indicates expertise or connoisseurship.
He is a military expert and is knowledgeable about war history.
Let's ask the opinion of someone well-versed in military affairs.
Compound of 軍事 (military affairs) and 通 (expert, connoisseur). The suffix 通 is commonly attached to nouns to indicate a person with specialized knowledge.