Final answer:
Soldiers in history carried tree boughs for camouflage, celebrations, or other military purposes, such as making shelters or commemorating victories.
Step-by-step explanation:
The soldiers were ordered to carry tree boughs for a variety of historical reasons which can include camouflage, celebration, or other military purposes. Throughout history, soldiers have carried branches for practical purposes such as concealing their movements or numbers. The materials could also be used for making temporary shelters or beds in the wilderness. In another context, carrying tree boughs and other forms of foliage has been associated with victory or commemoration, as seen in historical depictions of warriors and victorious athletic events.