If it is just as a reference to differentiate them from someone older of the same name, then no you wouldn't. If it was part of their actual name, then it would be capitalised. Your question seems to indicate that you are talking about the first case, so in that case, it would not be capitalised.
It should be capitalized if it directly precedes someones name.
You should capitalize it if it is a brand name.
No, but you capitalize the name of a biome.
It depends on how it is being used, but in most times no, it will not be capitalized. If you're using the word to distinguish between a father and son of the same name, then you capitalise it, For example: John Smith Senior John Smith Junior
You capitalize it when it's part of a proper name, e.g. Treaty of Paris.
Only is they are in the begginning of a sentence of someones name such as the name AUTUMN.
It should be capitalized if it directly precedes someones name.
The correct way to write "Junior" after someone's surname is to capitalize both the surname and "Junior" itself, with a comma placed before "Junior." For example, if the individual's surname is Smith, it would be written as "Smith, Junior."
A title should be capitalized only if it is used like a name: I spoke to Junior Counselor Higgins. Junior Counselor Higgins was invited to the meeting. If a title is not used as a name, it is not capitalized: I spoke to the junior counselor. We hired ten junior counselors.
no.
Leitentnt Junior Grade
i am pretty sure you do
You should capitalize it if it is a brand name.
Capitalize college years when they are used as proper nouns or when they are part of a title, such as Freshman Orientation or Senior Thesis. Otherwise, use lowercase, for example, "I am a senior studying biology."
If your name is Junior, then no. Junior Jr.?
When it is the name of a particular country, you capitalize it.
he is a junior