Landsknechte were German or Swiss mercenaries in the 30 years war.
What makes them so interesting for me is their appearance.
At that time (late 15th to the late 16th century) clothing was strictly regulated and not everybody was allowed to wear everything. There were rules and even laws for what color or clothing item was allowed to whom.
The Landsknechte just started to wear gaudy clothing adopted from the Swiss. They did not have a uniform but depending on their rank they had more or less protective and nice clothing.
Maximilian the I (who is the "father" of the Landsknechte) allowed them to wear their clothes as a perk for their short and brutal life.
One theory about the slits in their vests is that it provided them the necessary room to move while fighting.
Why I mentioned cows in my last post is because the shoes are called "cow mouth shoes" because of their form. So you see, again cow related. ;-)