I've been doing the same. I am concerned though, that my use of the in game VoIP system to transmit these bugle calls, while fun and immersive, may soon become an annoyance to the regiment/overall community if there is no real purpose. It is my goal to remedy this by giving these bugle calls purpose.
Proposal: I encourage individual communities to try and "standardize" bugle calls in game. It will not only add a sense of immersion, but also help orders to be heard by all officers (non-com or otherwise). I am aware of the fact that most groups use TS/Discord to communicate (much to my chagrin) , but this can facilitate as a redundancy to ensure that all orders are heard by all those that need to hear it. I have compiled a condensed list of 8 bugle calls that you could use. Each have been taken from recordings of US Infantry/Skirmishers bugle calls, and shortened to be less than 10 seconds in total length (Save, the "to the colors" call. Though I don't feel it to be a bother). I feel that this is a perfect length of time for the calls to not impede further orders in the field, yet also provide enough information for you to differentiate between them all.
BUGLES WERE IMPORTANT DURING THE CIVIL WAR. THEY CAN HELP US. BELOW ARE THE FEW YOU SHOULD LEARN, AND SOME TIPS TO REMEMBER THEM BY.
NOTE: It was common practice to write 'lyrics' to help differentiate and remember the Bugle Calls. I have written a few to help us remember them. Additionally, each title is a link to be able to listen to/download each audio file.
Forward March:
"Let's hurry up! Let's hurry up! Let's hurry up, and go boys! Let's hurry up, let's hurry up, let's hurry up, and go!"
Halt:
"Stop your feet! Stop your feet!"
CHARGE!
*Couldn't think of one but this is very distinct. Hard to forget.
Cease Fire:
"CEASE FIRE! CEASE FIRE! CEASE FIRE! CEASE FIRE!"
Fix Bayonets:
"Let's go boys, let's go boys, and grab your bayonets! Fix 'em now, fix 'em on your muskets now!"
Unfix Bayonets:
"Take 'em off now! Take 'em off now!"
Retreat March:
“Time to retreat, we wont be beat, but keep up the fire, no slack as we retire!”
I like the sound of those! Perhaps they could use it! Thanks for posting.