These are kanji written vertically.
The meanings are generally divided into two main categories.
1. a person in charge of leading or commanding an army
This is one of the official positions and titles for commanding a large army. It has long been one of the titles of military commanders in East Asia. The honorific title used diplomatically or within the military is “閣下 (it is said Kakka)”.
In the modern military, the ranks of generals in the Army, Air Force, and Marine Corps are brigadier general, major general, lieutenant general, and general, and their Japanese translations are “shogun”.
2. abbreviation of “Seii Taishogun”
I think this is what you want to know.
In Japanese history, “Shogun” is one of the official titles given to the representatives of the Shogunate. It was first appointed to Otomo no Daimaro in 794, and ceased for a time in 813.
It was first appointed to Minamoto no Yoshinaka in 1184, and then to Minamoto no Yoritomo, who founded the Kamakura shogunate, in 1992, and became the title of the head of the samurai government. It was succeeded by the Ashikaga clan of the Muromachi shogunate and the Tokugawa clan of the Edo shogunate, and was abolished with the restoration of the monarchy in 1867.
