It is usually known as a battle.
That would be a battle.
for avoid a battle between two armies.
A fight between two armies is commonly referred to as a battle. Battles are significant engagements during wars, where organized military forces confront each other in combat. The outcome of a battle can influence the course of a war and has strategic implications for both sides involved.
Allied armies are Armies from different countries that are working on the same side. Two or more countries may come together to fight a common enemy, this would make them allied armies.
it were between two
A fight to the finish
The area between the two armies facing each other is often called by Americans as "no-man's land".
We had fought Japan because they had invaded France
A duel is a fight between two people
A duel is a fight between two people
A fight between two people was reported.
No, frontier is any unexplored area which is why space may be the final "frontier".