A city in Otter Tail County, Minnesota, United States.

A sleeveless jacket originating in the US military, now popular in motorcycling, metal and punk subcultures.

Which has been tested on the battleground. / (figuratively) Which has been successfully put to the test in a real-life situation, in conditions of real use.

(nautical, military, obsolete) A ship of the line or battleship.

To continue to wage war when it is clear that one is not going to win. / (idiomatic) To try to do something so difficult that it will probably end in failure.

The primary tank of a country or armed forces.

Alternative form of pick one's battles

To only involve oneself in disputes that one is likely to win. / To only take a stand for a cause that is truly important to one.

plural of main battle tank

It is necessary to be informed in order to do the right thing in a given situation.