The phrase "army engaged" is correct and usable in written English.
It can be used in contexts discussing military operations or situations where an army is actively involved in a conflict or mission.
Example: "The army engaged the enemy forces at dawn, marking the beginning of a significant battle."
Alternatives: "military involved" or "troops active".
It binds people together – not just the army engaged in battle, but the whole community.
Despite a supposed unilateral ceasefire, the paramilitaries carried on killing and, in places, the army engaged them.
The army of the Lombard League, under the leadership of Milan, and Frederick's army engaged in a pitched battle, in which the supporters of the empire were thoroughly routed.
The gas-field attack coincided with an escalation of the fight inside Mali, according to Western and Malian officials, as French ground troops, joined by soldiers of the Malian Army, engaged in combat with Islamist fighters.
"We have made a profound and dramatic shift in focus from supporting a police force in a friendly country to supporting an army engaged in a civil war," said Senator Slade Gorton, a Washington Republican.
In response to a campaign of terror against French colonists by Algerian fighters, the French army engaged in the torture of its detainees — both Algerians and their French sympathizers.
Similarly, Wellington was not usually in command of rear guard actions, during advances or retreats, despite his army engaging in them often.
As the song begins, Knowles removes her armor and confronts the male army, engaging in a series of shoulder-thrusting dance routines.
Much of the peshmerga training is still in the early assessment phase as coalition partners decide who will oversee which aspects, even as Kurdish forces and the Iraqi army engage in daily battle with Islamic State fighters, who are armed with advanced weaponry.
The hill offers a sweeping view of the flat, marshy land where the two armies engaged each other.
"Unless it is stopped and handled quickly, it will delay the implementation of the Lusaka agreement," he said referring to the peace accord signed last year by the various armies engaged in the Congo war.
