The phrase "army battles" is correct and usable in written English.
It can be used when discussing military conflicts or engagements involving armed forces.
Example: "The history of army battles reveals the strategies and tactics employed by different nations throughout the centuries."
Alternatives: "military conflicts" or "armed confrontations".
A8 Colombia Army Battles Rebels The army said that it had repelled a major offensive by leftist guerrillas in fighting that has left 41 rebels and 3 soldiers dead.
Henri E. Cauvin (NYT) EUROPE BRITAIN: ARMY BATTLES FOOT-AND-MOUTH -- Army trucks and 200 soldiers were pressed into service in western England to help clear carcasses of 60,000 dead animals from fields in the continuing effort to curb the spread of the highly contagious foot-and-mouth disease.
The figures emerged as the army battles a recruitment crisis.
Many more blow themselves up in suicide attacks as the army battles to finish them off.
As the army battles on, it is unclear where the militants are, how damaged they are and to what extent it will pursue them.
A photographer befriended a group of children and took photos of them fighting their army "battles".
In the U.S. Army, battle area surveillance radically augmented conventional reconnaissance methods.
At the same time, the Shia-dominated Iraqi army battled it out with Shia militias in Basra.
In 2012, fire swept through the vaulted passageways of many of these ancient markets, as rebels and the Syrian army battled for control.
Violence escalated in the Kivu region as Kabila's army battled a new insurgency fuelled by the election's losers, as well as land conflicts with neighboring Rwanda.
If you want to find out how an actor responds to pressure, don't bother with opening nights; just observe them trying to change from a lounge suit into army battle-dress in 35 seconds.
