No you do not need to capitalize all letters, but the rank typically is in all caps on correspondence. I have been in the Army many years and have always gotten the mail no matter the font or Capitalization.
When refering to an army as a body of soldiers, the term 'army' is not capitalized. But when using the term as a reference to the U. S. Army, it is a proper noun and becomes capitalized. It is the same with the abbreviated names of the other military services. The terms (i.e., navy, Navy, air force, Air Force, etc.) can be used either as common nouns to refer to organizations of particular types of war fighters or as references to the name of specific military services of the United States.
yes
US Army, British Army, Canadian Army, Free French army, Polish Army, and the German Army
The singular possessive form is army's, for example: the army's position.
Always... Army Reserve is a proper noun.
Yes, as you capitalize everything that has to do with geography, and the Army
You capitalize all rank that is part of a title, for instance:Private QunicySergeant JonesCaptain WallyIt is not necessary to capitalize rank that is not part of a title, for instance."John wanted to become a sergeant in the US Army."
Yes it should be capitalized in this case.
Capitalize "army" when you are referring to a specific army, e.g. the British Army, the US Army.
No, the word "army" is not always capitalized. It should only be capitalized when it is used as part of a proper noun or when it begins a sentence.
Yes, "Continental Army" should be capitalized as it is a proper noun referring to the unified military force established by the Second Continental Congress during the American Revolutionary War.
no, but you do capitalize mum
Gordon Meade. He was told that he should have pursued and destroyed the Army of Northern Virginia.
You capitalize the first A but not the last a.
No, you do not capitalize the word drama.
Capitalize the first word in a sentence. Capitalize proper nouns, such as the names of people and places. Capitalize the pronoun "I." Capitalize the first word of a quote. Capitalize days of the week, months, and holidays. Capitalize the titles of books, movies, and songs. Capitalize the first, last, and important words in titles.