Final answer:
The proper wear of the infantry blue shoulder cord involves it being worn on the right shoulder of a military uniform, neat and functional, signifying infantry affiliation.
Step-by-step explanation:
The proper wear of the infantry blue shoulder cord is part of a military uniform and follows a specific set of regulations. This decorative cord is worn on the shoulder of a soldier's dress or service uniform to signify their infantry affiliation. It should be worn on the right shoulder, with the cord passing under the arm and secured by a button on the shoulder loop. It is important that the cord is neat and presentable, with no fraying or discoloration. Furthermore, the cord should be arranged in a manner that does not obstruct the functionality of the uniform or impede the soldier's movement.