What is the origin of the lake tank image that has become a meme? (2021)

Germans pioneers wore white uniforms? That sounds like the worst possible colour for digging ditches, recovering tanks or camouflage (if it isn't snowing). Why would they do that? Did Hugo Boss do the design?

From the link, the white pants are part of the "Drillich" work uniform. From searching around, these were intended as work uniforms / overalls. You were intended to wear these (there were both pants and jackets) over your actual uniform, and these would take the abuse.

It seems like the early war patterns were simply undyed. Mid-war versions were apparently dyed darker.

Here's a forum with a bunch of pictures of examples: https://www.militariacollectors.network/forums/topic/4042-th...