chevron (military rank insignia)
Refers to the V-shaped stripe(s) worn on a uniform sleeve to indicate rank, especially in military contexts. Compare 山形紋 for a broader heraldic chevron pattern.
See also: 山形紋
A chevron was sewn onto the sleeve of his uniform.
山形紋 is a general heraldic chevron pattern, while 山形袖章 specifically refers to the chevron as a military rank insignia worn on a sleeve.
Compound of 山形 (yamagata, 'mountain shape' i.e. chevron shape) and 袖章 (sodeshō, 'sleeve insignia'). The reading そでしょう is a standard compound reading.