WAR - Who are combating the enemy face-to-face?

The percentage of soldiers actually combating the enemy face-to-face is shockingly small. 

NATO has app. 12,000 soldiers along NATO’s easternborder. This looks a lot, but from these soldiers, only 10% see real combat. In this case only 1,200. Among these NATO troops are app 8,000 US troops. Which means a “formidable” US combat force of 800. Only a handful of the remaining 400 NA TO troops have real combat experience. I bet Putin can’t sleep at night. 

Percentage of service member that see combat:

60% see combat                                                  7,200 soldiers

30% deployed in the combat premise              3,600 soldiers

10% engage in battle                                          1,200 soldiers