according to http://centjours.mont-saint-jean.com/detail_uniteBR.php?rubrique=U&unite=91&nation=4 the nassau troops didnt have any flags, except the three battalions in the first regiment.

if you look at the baccus flagsheet, the front of it, it says "brinswick, netherlands, hannover", but on the back of it it says that also these nassau flags is included.

now, as you can see on the site that i linked to there is an yellow flag with a lion on it, but none of the flags on the baccus flag sheets has such a flag, even less 3 of them.

the aim is the waterloo campaign and maybe the 3 nassau battalions had different flags at that point,  so my question is, which of all the flags on the baccus flag sheets is the correct 3?

The middle and extreme right on the bottom row are Nassau. The yellow flag with lion is upto 1808

the middle and extreme right, ok, thanks, but thats just 2, there are 3 battallions that has flag. the flag n the extreme left at the botton, is that also a nassau flag?

That one is Hanoverian

Mollinary. Yes you are correct. They are Holland pre 1810. The back of the flagsheet lists them as being Nassau.

Nassau flags from warflag.com

Thanks for bringing this to my attention.   I've corrected the error and the Nassuaers now have the correct colour.

Here's the revised sheet:

thanks peter, now i can finally get the battallions right:)