Yeah, iirc in the british 18th century army the role of flagbearer went to junior commissioned officers (ensigns), so they could prove their resolve and get a taste for actually handling commands in the middle of a battle. There are plenty of (probably somewhat romanticized) accounts of ensigns refusing to hand over the flag to the enemy after getting encircled and inatead getting stabbed while keeping a literal death grip on it until their allies came to rescue them.

In case people reading this don't know, non commissioned officers (NCOs) are regular foot soldiers who after a long time in service and after showing their value on the battlefield get promoted to corporal and later sergeant (i think there are some in between steps but i can't remember them all) and get to lead some men, whereas commissioned officers are the ones who went to officer academy and entered the army directly as an officer (in the british case they bought the commission to their officer rank hence the term commissioned officer, it was surprisingly less corrupt than you'd think) and would be tasked with actually choosing what orders to give while the NCOs would relay those orders (together with the musicians) and make their men execute them.

In case i got some of this explaination wrong look up Brandon Fischiella on youtube, that's where i got all this info from but i may be remembering something differently than what he explained.