Here is an extract from the rulebook on basing (stands)
Quote:
1.1.2 Stands- A stand may be no more than 40mm and no less than 5mm across in any direction.
- A stand must be at least 20mm across in one direction (ie, a 5mm by 5mm stand is not allowed, but a 5mm by 20mm stand would be okay).
- Stands representing infantry units must have at least three infantry models and may not have more than seven.
- Infantry mounted on bikes or horses must have between two and four models mounted on each base.
- Stands representing artillery must have between one and two artillery pieces and up to six crew models.
That said, the rules are intended to be reasonably flexible including the use of proxies etc. So as long as you and you opponent are clear on what each stand actually is and you are not using the same model to proxy different units (covered in the 5 min warm up), I am sure there should not be any real issues.
Note:- For preference Units (especially infantry) should be easily distinguishable for those among us with poor eyesight in dim conditions
