I agree they must be related, everything is there except the lion.
The one I posted appears to be more modern.
If you've done extensive searching then you probably browsed here, huge collection of DUI's
http://www.tioh.hqda.pentagon.mil/C...x?CategoryId=22&grp=2&menu=Uniformed Services
I would be surprised if it wasn't somewhere in there.
[Can be tough finding good results are search engines think you are looking for drunk driving info]
I am thinking the fleur indicates a unit that fought in France WW1, or combat service in France at some point in time. The red as already stated, artillery.
Lion most likely service in England. White would be infantry at some point in the units evolution.
The blue X [saltire] stands for Union civil war service [which of course does not mean the badge itself is civil war era, only that that conflict is on this units service file].
Here is an example for those interested just how loaded with symbolism even a seemingly simple design can be
192D MILITARY POLICE BATTALION
Symbolism
The shield is white, the old facings of the Infantry. The red cross is for Revolutionary War service and the blue saltire for Civil War service. The fleur-de-lis on the red chief, the present color for Artillery, represents service as Artillery in France during World War I.
So we can see the OP badge, the unit saw Artillery service in France during World War I and infantry service [Union] during the Civil war.
Only mystery is how the lion [England] fits into this, and of course, the unit itself.
Why would a clear reference to service in England be superimposed over a clear reference to Union infantry service in the civil war ?