The phrase "although the unit was" is correct and usable in written English.
It can be used to introduce a contrast or exception regarding the state or condition of a unit in a sentence.
Example: "Although the unit was functioning properly, it still required maintenance to ensure longevity."
Alternatives: "even though the unit was" or "despite the unit being".
And, although the unit is funded until 2019, its work may not be finished by then.
Although the unit is still unavailable to consumers, the special developer version, aimed at companies wanting to design VR games and applications, has sold over 50,000 units worldwide.
Although the unit is military in nature, its mission is humanitarian — and has less to do with war, per se, than its lasting psychic toll.
Although the unit is cautious of interpreting a trend from a single year's figures, it concluded: "We are confident there has indeed been a levelling off and possibly even a downturn in this age group's experience of drugs".
One line can be a block, although the unit is too small to compose discriminative (usually long) queries.
Although the unit is operated in the "severe sour regime", due to the low temperatures the corrosion risk is less severe (Schweitzer 1996).
Although the additional costs of the unit were €35 per day, hospital costs in Delft were comparable to the reference regions as a result of the substantial reduction in length of stay.
If there is a change of government, the future of the unit is uncertain, although David Cameron in his conference speech to Conservatives last week announced that Iain Duncan Smith would chair a committee to co-ordinate a Tory government's fight against social division.
Although the units are intended for short- or medium-term assessment and treatment, it was found that some people had been kept in them as long as 12 years.
Although the units are rather bulky, they fit easily next to miners' emergency shelters with other lifesaving equipment.
