Battleground (noun)

1. An area where a battle is being or has been fought.
2. A place or situation where a contentious struggle or competition is taking place.

Origin:

A combination of the words "battle" and "ground" meaning "the place where a battle is fought".

Examples:

1. The battlefield was littered with debris.
2. The forest was a battleground for the two armies.
3. The city became a battleground during the civil war.
4. The company's boardroom became a battleground for control of the company.
5. The internet has become a battleground for the minds of the youth.