軍 in Chinese / Japanese...

軍 means army, military, or arms.

軍 is also a character used in the compound word that means “army general.” It's the “gun” in the well-known Japanese title “Shogun” which means general.

空軍 is “Air Force” in Chinese, Japanese Kanji, and old Korean Hanja.

If you're an airman, this could be the title for you.

冠軍 is a Chinese word that means champ or champion.

軍神 is a Japanese title meaning god of war, or war hero.

This can also be the surname Gunshin.

軍紀 means military discipline or military principles.

If maintaining your military discipline is important to you personally or important to your military unit, this is the wall scroll to have up behind your desk. In fact, it's the kind of thing I expect to see behind the desk of a First Sergeant or maybe a hardcore NCO.

Note: In some rare contexts, it could be extended to mean “morale,” but “discipline” is much closer to the commonly-held definition.

Note: This term is not well-known outside the military services in Asia (not used by the common person).

海軍 is the Chinese, Japanese Kanji, and Korean Hanja word for “Navy.” 海軍 is not country-specific, so it is the title for “naval service” from any country with a navy.

These two characters literally mean “sea military.”

A nice scroll for any sailor who likes Asian characters and has pride in their service.

将軍 or Shogun, in the simplest definition, is a General, but you could also use words such as commander, lord, overlord, highest ranking, or commanding officer.

The title “Shogun” has held some slightly ambiguous meanings at times in Japanese history.

In the west, when someone mentions “Shogun,” we may be filled with thoughts of gallant warriors. Some might even think of the TV mini-series with Richard Chamberlain. Often westerners use the words, Samurai and Shogun interchangeably, but that's really not technically correct. In the case of the Samurai, the Shogun was a designated (by the emperor) leader of a gild of Samurai. In this context, the Shogun was a Samurai lord. Or effectively, a commanding officer of a company of Samurai - to put it in modern military terms.

Sometimes a Shogun was a general; other times, he was the leader of a military government in Japan - but not a front-line warrior like a Samurai.

Variants of the same characters are used in China for the rank and title of a General of the People's Liberation Army (and the same term and characters have been used for the last 2200 years since the Qin Dynasty).

將軍 is the more Chinese and Korean Hanja version or General.

There is a slight variation in the way the first character is written compared to the Japanese Shogun (将軍) title. So if you want to specifically refer to a Chinese or Korean General, this is the way. Japanese people would still easily identify this as “shogun.”

Note: This term is also used for Admiral in Korean in a certain context (if you need a better title for Admiral, just let me know).

軍人 means “Soldier” or literally “Military Person.”

This can also be translated as “military personnel,” “soldier,” or “serviceman” (it is unisex, so male or female is not indicated).

現役軍人 means “Active Duty Soldier” or literally “Active Duty Military Person.”

This title is a great way to show pride in being an active duty member of the armed forces.

The first two characters mean “active duty” and the second two characters can be translated as “military personnel,” “soldier,” or “serviceman” (it is unisex, so male or female is not indicated).

美國軍人 means “American Soldier” or literally “American Military Person.”

This can also be translated as “American military personnel,” or “American serviceman.” Gender is not specified in this title, so it's appropriate for male or female soldiers.

軍事情報 is the full way to say “Military Intelligence.”

The first two characters mean “military affairs.”

The second two characters mean “intelligence” or “information-gathering.”

If you work in the G2 section of your military unit, this is the wall scroll for you.

退伍軍人 is the Chinese title for a military veteran.

The first two characters mean “retired from the ranks,” or discharged.

The last two characters mean serviceman, soldier, or military personnel.

海軍陸戰隊 is the Chinese way to express “Marine Corps.” This could be the Marine Corps of virtually any country that has an amphibious military force.

Let me know if you want a more specific title, such as British Royal Marines or U.S. Marine Corps.

The Chinese title for Marines is very verbose...
Breaking down each character this means:
“ocean/sea military/arms shore/land fighting/war/battle corps/team/group.”

海軍陸戰隊員 is the Chinese way to express “Marine.” (as in a member of the Marine Corps). It is not country-specific, so it could be the Royal Marines, U.S. Marines, Chinese Marines, etc.
In Australian English, they would translate this as “Naval Infantryman.”

Breaking down each character this means:
“ocean/sea military/arms shore/land fighting/war/battle corps/team/group person/member.” Note that the first two characters are presented together but outside of this phrase mean “navy” (sea military).