I would really like to see the French Foreign Legion going forward.
I have in mind a classic event assaulter squad with four guys and an engineer.
They would be armed with the Rossignol ENT B1. It was a French select-fire rifle from the early years of the 20th century. It was chambered in the high velocity 6Γ60mm intermediate caliber and had a detachable box magazine.
Source: Before The Sturmgewehr: Assault Rifle Developments Prior to 1942 | thefirearmblog.com