military targets

In response to NATO, The Soviet Union eventually went on to form what was known as the Warsaw Pact. This was an agreement within Soviet Countries that if someone were to attack one of them within the Pact, it would be considered an attack on ALL of them.

The Warsaw Pact was the military alliance formed to counter Soviet expansion.

The NATO agreement was important to the Vietnam War because it allowed Belgium, Britain, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Portugal, and the United States to form a pact against the Soviet Union. It helped later during the Vietnam War because the same countries came together to control Vietnam.

NATO stands for North Atlantic Treat Organization. This treaty was signed by the United States and other countries. The terms of the treaty state that each country that signs agrees to protect all of the others that sign.

Warsaw pact... This is exactly right. The Soviets enlisted their satellite nations such as Poland, Romania, Ukraaine, and all of the other smaller nations to form the Warsaw Pact as a response. It all had to do with the Nuclear threat and what former Secretary of State Robert Macnamara's concept of MAD...Mutually Assured Destruction. During the Cold War the Soviets moved mobile Ballistic missile launchers into these states in order to asssure that in the event of war they would be able to reach Western Europe. Not to mention the diplomatic repercussions of such a policy.

NATO = North Atlantic Treaty Organization; formed in the late 40s by the US and non-Communist Europe to defend against the USSR.

Formed in 1949, the North Atlantic Treaty Organization is a security alliance of 28 (12 original members) countries from Northern America and Europe. NATO primary role is to unite with other member countries to fight aggression against member states.

Yes, they joined on April 1st, 2009.

Allied Command Operations (ACO) / SHAPE

Both were intergovernmental military alliances created before or during the Cold War, on the principle of collective defence whereby its member states agree to mutual defense in response to an attack by any external party.

It includes the five Treaty of Brussels states, as well as the United States, Canada, Portugal, Italy, Norway, Denmark and Iceland. France will now join as of march 15th, 2009, Holland was one of the 1st nations to join.
The original twelve members of NATO were the United States, the United Kingdom, Canada, France, Denmark, Iceland, Italy, Norway, Portugal, Belgium, Netherlands, and Luxembourg. Today there are 28 members of the Alliance. NATO was formed after the 1949 blocade of Berlin by the Soviets.
Greece

During WWII, all of those mentioned above tried to help the allies.

UN- supported allies

Marshall Plan- backed up war-stricken WWI nations recover

NATO- alliance of the allies

Get the idea. Each tried to support the allies win the war and gain more support

None to really speak of. They are, for the most part, one and the same. The 9mm NATO is merely a variant of the 9mm Luger loaded for military specifications.

It didn't.

the mexicans crew

You may want to narrow down your criteria a good bit. The question is much too broad, as several countries were not members of NATO in the 1950s - some of those countries later became members of NATO, some were in the Warsaw Pact in the 1950s (some of those, too, would eventually become members of NATO), some countries were unaligned.

One country cannot be part of every union there is. Finland doesn't feel the need to be a part of NATO now. Finland works with NATO.