The M4 slowly replacing the M16?

[RevolvingCylinder]

Even this army grunt knows that.

Uh-Oh! He didn't capitalize Army.

 

[Army GI]

only DA documents are required to capitalized Army and Soldier. Gen Schoomaker mandated it. But the rest of the world recognizes Marines as a proper noun while there is no standarization for Army. Lots of published works newspapers etc spell it US army.

 

[Neal in GA]

It's different for army. Every nation has an army. There's only one USMC, and few countries even have branches called Marines. Of course, I do still have to take this opportunity to point out that my current branch, the ARNG, is the oldest.