Allied mission Get into the truck
 

I´m in the US mission where I have to infiltrate trops in the german Airfield but theres no way to get into the truck after I killed the german soldiers. Any hint?

You first put your guys on Hold fire, let the fuel trucks pass, just dont do anything for awhile, let the Fuel trucks enter the base then after the guys whine about dying if the equipement is broke you sneak down there, gun them down and if u did it quietly enough and the Airfield doesnt know about it then you should get an Icon of a truck and then you off you go. I went that route for that mission...it was a joke lolz. I ended up just making a swift attack w/ my 2 squads on the right side ofthe airfield where the Pzr III your supposed to steal is haha