The phrase "ad hoc unit" is correct and usable in written English.
It can be used to refer to a unit or group that is formed for a specific purpose or task, often temporarily.
Example: "The organization established an ad hoc unit to address the urgent issues arising from the recent crisis."
Alternatives: "temporary unit" or "special task force".
The logical articulation of the analysis is flexible; two specific estimation schemes (the estimation of ad hoc unit parameters for the external costs and ad hoc approach for using GLC as proxies of users' surplus in a scenario where the introduction of the innovative service modifies the modal split of freight transport between different solutions) can be applied to other territorial contexts.
It was an ad hoc unit formed for specific operations and not considered a "permanent" USMC unit.
The organization that was to become the 509th required its own transports for the movement of both personnel and materiel, resulting in creation of an ad hoc unit nicknamed "The Green Hornet Line".
When a private methadone clinic in New York City shut down in 1972, Newman started a methadone program on an out-of-use Staten Island Ferry boat, shuttling methadone back and forth to the ad hoc unit using his 1-year-old son's stroller. .
Throughout the Kokoda Track campaign, troops from the 49th Battalion joined Honner Force, an ad hoc unit tasked with conducting long-range patrols along the Goldie River to prevent the Japanese from cutting the track, while the rest of the battalion established standing patrols between the Goldie and Laloki Rivers.
The disaster left Captain Pierre Kroll as the senior officer of the remnants of the Khénifra garrison, some three companies of skirmishers (one of which was an ad hoc unit made up from the partially equipped and shaken survivors of the battle).
The clashes, which began when the Libyan National Army's highest ranking officer tried to speed through a militia checkpoint, underscored the continued inability of Libyan authorities to organize — or control — the thousands of armed men who fought for months against Col. Muammar el-Qaddafi in ad hoc units that have proved enduring.
The eastern side of Osterbeek was fairly stabilised after the retreat of the previous day, with numerous ad hoc units under company commanders defending the approaches to the town.
All four Allied units streamed south and west toward the road crossings over the steep railway cutting at Oosterbeek and Wolfheze and gathered in ad hoc units in the woods on the south side, where most of them spent the night.
This tantalizing ad-hoc unit includes the bassist Linda Oh, the pianist Matt Mitchell, and the drummer Ches Smith.
Yet, only hours later, the original military objectives were bring accomplished by ad-hoc units that faced much fiercer German resistance.
