The phrase "its own force" is correct and usable in written English.
This phrase is typically used to indicate that something has inherent power or strength associated with it. For example, "The idea of justice has its own force, inspiring people to take action."
It has its own force of about 100 firefighters.
Muscle is unique among tissues because it generates its own force, presenting a unique challenge in tissue engineering.
The huge contract has two aspects: Aegis will be the coordination and management hub for the more than 50 other private security companies in Iraq, and it will provide its own force of up to 75 "close protection teams," each made up of eight armed civilians who are to protect staff members of the United States Project Management Office.
If this disagreement cannot be overcome, the EU will find it hard to create its own force.
This would be true even though § 4 of the Arbitration Act provides that "the court shall proceed summarily" to trial, because an order setting a trial date only guides the course of litigation, and does not, of its own force, dispose of it on the merits.
Had objection been made in this case during the officer's testimony about the search, it would have called forth of its own force the specific answer that the wife had given her permission and, in turn, the assertion that the permission was ineffective.
Although the powers of a state must in their exercise give way to a power exerted by congress under the constitution, it has never been adjudged that that instrument by its own force gives any one the right to introduce into a state, against its will, cattle so affected with disease that their presence in the state will be dangerous to domestic cattle.
On the assumption, however, that the Free Exercise Clause of the First Amendment does not, by its own force, require exempting devout objectors from military service, it does not follow that § 6 j) is a law respecting an establishment of religion within the meaning of the First Amendment.
And this being the first prosperous sea-battle the city had engaged in with its own force since its captivity, Chabrias won great popularity by it, and Phocion, also, got the reputation of a good commander.
