@garethmunr848 Yeah that's correct, happens after changing some weapon damage.
To do is:
1. Be silence - no red discovery. Tip: Get the silenced sniper gun, after you melee sniper on hill, walk some further and get it by the truck.
2. Dynamite on guns 1 is enough,
3, rest of dynamite on tank, throw a anti tank grenade to tank, before it explodes detonate. This best can be done when behind the tank.
Cheers,
See also:
https://answers.ea.com/t5/Bug-Reports/Dynamite-not-taking-out-tank/m-p/8997800#M26874https://answers.ea.com/t5/Bug-Reports/Fraternite-ou-la-mort-challange-bug/m-p/8872526#M26158https://answers.ea.com/t5/Bug-Reports/War-story-challenge-BUG/m-p/8866336#M26133 
