The phrase "a substantial force to" is correct and usable in written English.
It can be used when discussing the impact or influence of a particular entity or action in a specific context.
Example: "The new policy is expected to be a substantial force to drive economic growth in the region."
Alternatives: "a significant factor in" or "a major influence on".
Officials in the Bush administration, under pressure to intervene in this West African nation settled by freed American slaves 150 years ago, have not yet announced whether the United States will deploy a substantial force to help stabilize the country or simply provide financial and logistical aid to West African peacekeepers.
Lord George Germain, the British official responsible for managing the war in London, remained convinced in spite of the resounding defeat that Loyalists were still a substantial force to be tapped.
Rupture of the anterior cruciate ligament (ACL) most commonly occurs as a result of a pivot-shift injury, requires substantial force to occur and is rarely a truly isolated event.
Often, a water pump installed with sealant can be stuck fast and require substantial force to break it loose.
Interestingly, despite the increased micromovement of the rough stems, they remained well fixed in the cement, requiring substantial force to remove them.
In 1394 95 he led a substantial force there to buttress the position of the English administration.
A substantial force can be applied to the shoulder and to an opponent in the tackle.
The classical form was to remain a substantial force in his music, particularly after his conversion to Catholicism, when he began writing a number of religiously inspired oratorios and longer works.
A substantial force of marines -- officers declined to say how many -- are set to move into the Tikrit area within days to root out Iraqi forces in the city, which is on the west bank of the Tigris 100 miles northwest of Baghdad, and has a population of about 100,000.
The Lib Dems are concerned about their ability to remain a substantial force in Parliament and, in the event of another inconclusive result, potentially continue to hold the balance of power.
But Mr. Obama will also give the military commanders in Afghanistan flexibility in determining the pace of the reductions and will enable them to retain a substantial force until after the next fighting season, which ends in October.
