Final answer:
Two platoons side by side form a 'company front', six cadets standing side by side form a 'rank', and an individual with six cadets on their left is part of a 'file'.
Step-by-step explanation:
In military terminology, when two platoons are standing side by side, they form what is known as a company front. If we are talking about a single file of soldiers, such as a roll of six cadets standing side by side, that formation is typically referred to as a rank. Finally, if you are an individual with six cadets to your left, it implies that you are part of a file, which is a column of soldiers one behind another. The emphasis here is on the structure and organization of military personnel in formations.