The phrase "a vast force and" is correct and usable in written English.
It can be used when describing a significant or powerful entity, often in a context that requires further elaboration or continuation of the thought.
Example: "The army was not just a military unit; it was a vast force and a symbol of national pride."
Alternatives: "a tremendous power and" or "a significant influence and".
Xerxes commands a vast force and moreover has at his disposal a number of gigantic beasts, real and legendary, along with weird claw-handed giants whose job is to decapitate underperforming generals pour encourager les autres.
Later, he betrays Ygritte in order to remain honorable, is elevated to command the defense of Castle Black against a vast force, and is even rescued by the unexpected arrival of the king.
Prithviraja mustered a vast force to meet Muḥammad Ghūrī, but infighting and enmity within the Rajput camp had weakened his position.
Whereas Bresson's naturalistic religion condenses a vast force into an infinitesimal gesture, Pialat expands spiritual power to a large-scale struggle that bursts out in physical and emotional violence.
Meanwhile, as a new report for The Henry Jackson Society: "Tehran's Servants" by Jonathan Spyer demonstrates, Iran has taken control of a vast force of Shia militias in Iraq that are now dominating much of the country.
Similarly, in Wild, Jean-Marc Vallée turns what could've easily been a sappy life-lesson into a film where the natural world comes across as a vast force, with Reese Witherspoon only a small figure travelling through it.
The day he took over, following a reconnaissance into the Kentucky hinterland, Sherman wrote anxiously to civilian supporters, and to Lincoln as well, that the whole countryside seethed with disunion, that the enemy was conspiring to create a "vast force" that would soon overwhelm Louisville.
I hated the constant sense of helplessness before vast forces, and, more than that, I disliked women's part in the dependence: My mother had been raised in a large farm family after she was orphaned, but they had little time for her.
George C. Marshall, the Army Chief of Staff, was assembling a vast fighting force, and many of the young draftees and volunteers were isolationist, ignorant, or indifferent.
Despite its skilful attempts to disguise it, the site is backed financially (if not editorially) by ESPN, which is a vast cultural force in the US – and not necessarily a force for good.
While Lesley gives all visitors an open welcome, Pat treats anyone setting foot on the farm as outlying snipers from a vast invading force of idiots and meddlers.
